diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 80aaf70c21..23c463fb94 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,10 +36,15 @@ jobs:
         run: |
           Invoke-WebRequest -Uri https://github.com/Ijwu/Enemizer/releases/download/${Env:ENEMIZER_VERSION}/win-x64.zip -OutFile enemizer.zip
           Expand-Archive -Path enemizer.zip -DestinationPath EnemizerCLI -Force
+          choco install innosetup --version=6.2.2 --allow-downgrade
       - name: Build
         run: |
           python -m pip install --upgrade pip
           python setup.py build_exe --yes
+          if ( $? -eq $false ) {
+            Write-Error "setup.py failed!"
+            exit 1
+          }
           $NAME="$(ls build | Select-String -Pattern 'exe')".Split('.',2)[1]
           $ZIP_NAME="Archipelago_$NAME.7z"
           echo "$NAME -> $ZIP_NAME"
@@ -49,12 +54,6 @@ jobs:
           Rename-Item "exe.$NAME" Archipelago
           7z a -mx=9 -mhe=on -ms "../dist/$ZIP_NAME" Archipelago
           Rename-Item Archipelago "exe.$NAME"  # inno_setup.iss expects the original name
-      - name: Store 7z
-        uses: actions/upload-artifact@v4
-        with:
-          name: ${{ env.ZIP_NAME }}
-          path: dist/${{ env.ZIP_NAME }}
-          retention-days: 7  # keep for 7 days, should be enough
       - name: Build Setup
         run: |
           & "${env:ProgramFiles(x86)}\Inno Setup 6\iscc.exe" inno_setup.iss /DNO_SIGNTOOL
@@ -65,11 +64,38 @@ jobs:
           $contents = Get-ChildItem -Path setups/*.exe -Force -Recurse
           $SETUP_NAME=$contents[0].Name
           echo "SETUP_NAME=$SETUP_NAME" >> $Env:GITHUB_ENV
+      - name: Check build loads expected worlds
+        shell: bash
+        run: |
+          cd build/exe*
+          mv Players/Templates/meta.yaml .
+          ls -1 Players/Templates | sort > setup-player-templates.txt
+          rm -R Players/Templates
+          timeout 30 ./ArchipelagoLauncher "Generate Template Options" || true
+          ls -1 Players/Templates | sort > generated-player-templates.txt
+          cmp setup-player-templates.txt generated-player-templates.txt \
+            || diff setup-player-templates.txt generated-player-templates.txt
+          mv meta.yaml Players/Templates/
+      - name: Test Generate
+        shell: bash
+        run: |
+          cd build/exe*
+          cp Players/Templates/Clique.yaml Players/
+          timeout 30 ./ArchipelagoGenerate
+      - name: Store 7z
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ env.ZIP_NAME }}
+          path: dist/${{ env.ZIP_NAME }}
+          compression-level: 0  # .7z is incompressible by zip
+          if-no-files-found: error
+          retention-days: 7  # keep for 7 days, should be enough
       - name: Store Setup
         uses: actions/upload-artifact@v4
         with:
           name: ${{ env.SETUP_NAME }}
           path: setups/${{ env.SETUP_NAME }}
+          if-no-files-found: error
           retention-days: 7  # keep for 7 days, should be enough
 
   build-ubuntu2004:
@@ -110,7 +136,7 @@ jobs:
           echo -e "setup.py dist output:\n `ls dist`"
           cd dist && export APPIMAGE_NAME="`ls *.AppImage`" && cd ..
           export TAR_NAME="${APPIMAGE_NAME%.AppImage}.tar.gz"
-          (cd build && DIR_NAME="`ls | grep exe`" && mv "$DIR_NAME" Archipelago && tar -czvf ../dist/$TAR_NAME Archipelago && mv Archipelago "$DIR_NAME")
+          (cd build && DIR_NAME="`ls | grep exe`" && mv "$DIR_NAME" Archipelago && tar -cv Archipelago | gzip -8 > ../dist/$TAR_NAME && mv Archipelago "$DIR_NAME")
           echo "APPIMAGE_NAME=$APPIMAGE_NAME" >> $GITHUB_ENV
           echo "TAR_NAME=$TAR_NAME" >> $GITHUB_ENV
       # - copy code above to release.yml -
@@ -118,15 +144,36 @@ jobs:
         run: |
           source venv/bin/activate
           python setup.py build_exe --yes
+      - name: Check build loads expected worlds
+        shell: bash
+        run: |
+          cd build/exe*
+          mv Players/Templates/meta.yaml .
+          ls -1 Players/Templates | sort > setup-player-templates.txt
+          rm -R Players/Templates
+          timeout 30 ./ArchipelagoLauncher "Generate Template Options" || true
+          ls -1 Players/Templates | sort > generated-player-templates.txt
+          cmp setup-player-templates.txt generated-player-templates.txt \
+            || diff setup-player-templates.txt generated-player-templates.txt
+          mv meta.yaml Players/Templates/
+      - name: Test Generate
+        shell: bash
+        run: |
+          cd build/exe*
+          cp Players/Templates/Clique.yaml Players/
+          timeout 30 ./ArchipelagoGenerate
       - name: Store AppImage
         uses: actions/upload-artifact@v4
         with:
           name: ${{ env.APPIMAGE_NAME }}
           path: dist/${{ env.APPIMAGE_NAME }}
+          if-no-files-found: error
           retention-days: 7
       - name: Store .tar.gz
         uses: actions/upload-artifact@v4
         with:
           name: ${{ env.TAR_NAME }}
           path: dist/${{ env.TAR_NAME }}
+          compression-level: 0  # .gz is incompressible by zip
+          if-no-files-found: error
           retention-days: 7
diff --git a/.github/workflows/ctest.yml b/.github/workflows/ctest.yml
new file mode 100644
index 0000000000..9492c83c9e
--- /dev/null
+++ b/.github/workflows/ctest.yml
@@ -0,0 +1,54 @@
+# Run CMake / CTest C++ unit tests
+
+name: ctest
+
+on:
+  push:
+    paths:
+      - '**.cc?'
+      - '**.cpp'
+      - '**.cxx'
+      - '**.hh?'
+      - '**.hpp'
+      - '**.hxx'
+      - '**.CMakeLists'
+      - '.github/workflows/ctest.yml'
+  pull_request:
+    paths:
+      - '**.cc?'
+      - '**.cpp'
+      - '**.cxx'
+      - '**.hh?'
+      - '**.hpp'
+      - '**.hxx'
+      - '**.CMakeLists'
+      - '.github/workflows/ctest.yml'
+
+jobs:
+  ctest:
+    runs-on: ${{ matrix.os }}
+    name: Test C++ ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: ilammy/msvc-dev-cmd@v1
+      if: startsWith(matrix.os,'windows')
+    - uses: Bacondish2023/setup-googletest@v1
+      with:
+        build-type: 'Release'
+    - name: Build tests
+      run: |
+        cd test/cpp
+        mkdir build
+        cmake -S . -B build/ -DCMAKE_BUILD_TYPE=Release
+        cmake --build build/ --config Release
+        ls
+    - name: Run tests
+      run: |
+        cd test/cpp
+        ctest --test-dir build/ -C Release --output-on-failure
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2d7f1253b7..3f8651d408 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -69,7 +69,7 @@ jobs:
           echo -e "setup.py dist output:\n `ls dist`"
           cd dist && export APPIMAGE_NAME="`ls *.AppImage`" && cd ..
           export TAR_NAME="${APPIMAGE_NAME%.AppImage}.tar.gz"
-          (cd build && DIR_NAME="`ls | grep exe`" && mv "$DIR_NAME" Archipelago && tar -czvf ../dist/$TAR_NAME Archipelago && mv Archipelago "$DIR_NAME")
+          (cd build && DIR_NAME="`ls | grep exe`" && mv "$DIR_NAME" Archipelago && tar -cv Archipelago | gzip -8 > ../dist/$TAR_NAME && mv Archipelago "$DIR_NAME")
           echo "APPIMAGE_NAME=$APPIMAGE_NAME" >> $GITHUB_ENV
           echo "TAR_NAME=$TAR_NAME" >> $GITHUB_ENV
       # - code above copied from build.yml -
diff --git a/.gitignore b/.gitignore
index 0bba6f1726..5686f43de3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -178,6 +178,7 @@ dmypy.json
 cython_debug/
 
 # Cython intermediates
+_speedups.c
 _speedups.cpp
 _speedups.html
 
diff --git a/AdventureClient.py b/AdventureClient.py
index 7bfbd5ef6b..206c55df9a 100644
--- a/AdventureClient.py
+++ b/AdventureClient.py
@@ -80,7 +80,7 @@ class AdventureContext(CommonContext):
         self.local_item_locations = {}
         self.dragon_speed_info = {}
 
-        options = Utils.get_options()
+        options = Utils.get_settings()
         self.display_msgs = options["adventure_options"]["display_msgs"]
 
     async def server_auth(self, password_requested: bool = False):
@@ -102,7 +102,7 @@ class AdventureContext(CommonContext):
     def on_package(self, cmd: str, args: dict):
         if cmd == 'Connected':
             self.locations_array = None
-            if Utils.get_options()["adventure_options"].get("death_link", False):
+            if Utils.get_settings()["adventure_options"].get("death_link", False):
                 self.set_deathlink = True
             async_start(self.get_freeincarnates_used())
         elif cmd == "RoomInfo":
@@ -415,8 +415,8 @@ async def atari_sync_task(ctx: AdventureContext):
 
 
 async def run_game(romfile):
-    auto_start = Utils.get_options()["adventure_options"].get("rom_start", True)
-    rom_args = Utils.get_options()["adventure_options"].get("rom_args")
+    auto_start = Utils.get_settings()["adventure_options"].get("rom_start", True)
+    rom_args = Utils.get_settings()["adventure_options"].get("rom_args")
     if auto_start is True:
         import webbrowser
         webbrowser.open(romfile)
diff --git a/CommonClient.py b/CommonClient.py
index 8af822cba5..8f1e64c059 100644
--- a/CommonClient.py
+++ b/CommonClient.py
@@ -493,6 +493,11 @@ class CommonContext:
         """Gets called before sending a Say to the server from the user.
         Returned text is sent, or sending is aborted if None is returned."""
         return text
+    
+    def on_ui_command(self, text: str) -> None:
+        """Gets called by kivy when the user executes a command starting with `/` or `!`.
+        The command processor is still called; this is just intended for command echoing."""
+        self.ui.print_json([{"text": text, "type": "color", "color": "orange"}])
 
     def update_permissions(self, permissions: typing.Dict[str, int]):
         for permission_name, permission_flag in permissions.items():
diff --git a/Fill.py b/Fill.py
index d8147b2eac..4967ff0736 100644
--- a/Fill.py
+++ b/Fill.py
@@ -483,15 +483,15 @@ def distribute_items_restrictive(multiworld: MultiWorld,
         if panic_method == "swap":
             fill_restrictive(multiworld, multiworld.state, defaultlocations, progitempool,
                              swap=True,
-                             on_place=mark_for_locking, name="Progression", single_player_placement=multiworld.players == 1)
+                             name="Progression", single_player_placement=multiworld.players == 1)
         elif panic_method == "raise":
             fill_restrictive(multiworld, multiworld.state, defaultlocations, progitempool,
                              swap=False,
-                             on_place=mark_for_locking, name="Progression", single_player_placement=multiworld.players == 1)
+                             name="Progression", single_player_placement=multiworld.players == 1)
         elif panic_method == "start_inventory":
             fill_restrictive(multiworld, multiworld.state, defaultlocations, progitempool,
                              swap=False, allow_partial=True,
-                             on_place=mark_for_locking, name="Progression", single_player_placement=multiworld.players == 1)
+                             name="Progression", single_player_placement=multiworld.players == 1)
             if progitempool:
                 for item in progitempool:
                     logging.debug(f"Moved {item} to start_inventory to prevent fill failure.")
diff --git a/Generate.py b/Generate.py
index 67988bf8b3..1fbb9e76a4 100644
--- a/Generate.py
+++ b/Generate.py
@@ -1,10 +1,12 @@
 from __future__ import annotations
 
 import argparse
+import copy
 import logging
 import os
 import random
 import string
+import sys
 import urllib.parse
 import urllib.request
 from collections import Counter
@@ -15,21 +17,16 @@ import ModuleUpdate
 
 ModuleUpdate.update()
 
-import copy
 import Utils
 import Options
 from BaseClasses import seeddigits, get_seed, PlandoOptions
-from Main import main as ERmain
-from settings import get_settings
 from Utils import parse_yamls, version_tuple, __version__, tuplize_version
-from worlds.alttp.EntranceRandomizer import parse_arguments
-from worlds.AutoWorld import AutoWorldRegister
-from worlds import failed_world_loads
 
 
 def mystery_argparse():
-    options = get_settings()
-    defaults = options.generator
+    from settings import get_settings
+    settings = get_settings()
+    defaults = settings.generator
 
     parser = argparse.ArgumentParser(description="CMD Generation Interface, defaults come from host.yaml.")
     parser.add_argument('--weights_file_path', default=defaults.weights_file_path,
@@ -41,7 +38,7 @@ def mystery_argparse():
     parser.add_argument('--seed', help='Define seed number to generate.', type=int)
     parser.add_argument('--multi', default=defaults.players, type=lambda value: max(int(value), 1))
     parser.add_argument('--spoiler', type=int, default=defaults.spoiler)
-    parser.add_argument('--outputpath', default=options.general_options.output_path,
+    parser.add_argument('--outputpath', default=settings.general_options.output_path,
                         help="Path to output folder. Absolute or relative to cwd.")  # absolute or relative to cwd
     parser.add_argument('--race', action='store_true', default=defaults.race)
     parser.add_argument('--meta_file_path', default=defaults.meta_file_path)
@@ -61,20 +58,23 @@ def mystery_argparse():
     if not os.path.isabs(args.meta_file_path):
         args.meta_file_path = os.path.join(args.player_files_path, args.meta_file_path)
     args.plando: PlandoOptions = PlandoOptions.from_option_string(args.plando)
-    return args, options
+    return args
 
 
 def get_seed_name(random_source) -> str:
     return f"{random_source.randint(0, pow(10, seeddigits) - 1)}".zfill(seeddigits)
 
 
-def main(args=None, callback=ERmain):
+def main(args=None):
+    # __name__ == "__main__" check so unittests that already imported worlds don't trip this.
+    if __name__ == "__main__" and "worlds" in sys.modules:
+        raise Exception("Worlds system should not be loaded before logging init.")
+
     if not args:
-        args, options = mystery_argparse()
-    else:
-        options = get_settings()
+        args = mystery_argparse()
 
     seed = get_seed(args.seed)
+
     Utils.init_logging(f"Generate_{seed}", loglevel=args.log_level)
     random.seed(seed)
     seed_name = get_seed_name(random)
@@ -143,6 +143,9 @@ def main(args=None, callback=ERmain):
         raise Exception(f"No weights found. "
                         f"Provide a general weights file ({args.weights_file_path}) or individual player files. "
                         f"A mix is also permitted.")
+
+    from worlds.AutoWorld import AutoWorldRegister
+    from worlds.alttp.EntranceRandomizer import parse_arguments
     erargs = parse_arguments(['--multi', str(args.multi)])
     erargs.seed = seed
     erargs.plando_options = args.plando
@@ -234,7 +237,8 @@ def main(args=None, callback=ERmain):
         with open(os.path.join(args.outputpath if args.outputpath else ".", f"generate_{seed_name}.yaml"), "wt") as f:
             yaml.dump(important, f)
 
-    return callback(erargs, seed)
+    from Main import main as ERmain
+    return ERmain(erargs, seed)
 
 
 def read_weights_yamls(path) -> Tuple[Any, ...]:
@@ -359,6 +363,8 @@ def update_weights(weights: dict, new_weights: dict, update_type: str, name: str
 
 
 def roll_meta_option(option_key, game: str, category_dict: Dict) -> Any:
+    from worlds import AutoWorldRegister
+
     if not game:
         return get_choice(option_key, category_dict)
     if game in AutoWorldRegister.world_types:
@@ -436,10 +442,13 @@ def handle_option(ret: argparse.Namespace, game_weights: dict, option_key: str,
     except Exception as e:
         raise Options.OptionError(f"Error generating option {option_key} in {ret.game}") from e
     else:
+        from worlds import AutoWorldRegister
         player_option.verify(AutoWorldRegister.world_types[ret.game], ret.name, plando_options)
 
 
 def roll_settings(weights: dict, plando_options: PlandoOptions = PlandoOptions.bosses):
+    from worlds import AutoWorldRegister
+
     if "linked_options" in weights:
         weights = roll_linked_options(weights)
 
@@ -466,6 +475,7 @@ def roll_settings(weights: dict, plando_options: PlandoOptions = PlandoOptions.b
 
     ret.game = get_choice("game", weights)
     if ret.game not in AutoWorldRegister.world_types:
+        from worlds import failed_world_loads
         picks = Utils.get_fuzzy_results(ret.game, list(AutoWorldRegister.world_types) + failed_world_loads, limit=1)[0]
         if picks[0] in failed_world_loads:
             raise Exception(f"No functional world found to handle game {ret.game}. "
diff --git a/NetUtils.py b/NetUtils.py
index 076fdc3ba4..f8d698c74f 100644
--- a/NetUtils.py
+++ b/NetUtils.py
@@ -198,7 +198,8 @@ class JSONtoTextParser(metaclass=HandlerMeta):
         "slateblue": "6D8BE8",
         "plum": "AF99EF",
         "salmon": "FA8072",
-        "white": "FFFFFF"
+        "white": "FFFFFF",
+        "orange": "FF7700",
     }
 
     def __init__(self, ctx):
diff --git a/Options.py b/Options.py
index 40a6996d32..2d3ef99d64 100644
--- a/Options.py
+++ b/Options.py
@@ -735,6 +735,12 @@ class NamedRange(Range):
         elif value > self.range_end and value not in self.special_range_names.values():
             raise Exception(f"{value} is higher than maximum {self.range_end} for option {self.__class__.__name__} " +
                             f"and is also not one of the supported named special values: {self.special_range_names}")
+        
+        # See docstring
+        for key in self.special_range_names:
+            if key != key.lower():
+                raise Exception(f"{self.__class__.__name__} has an invalid special_range_names key: {key}. "
+                                f"NamedRange keys must use only lowercase letters, and ideally should be snake_case.")
         self.value = value
 
     @classmethod
diff --git a/Utils.py b/Utils.py
index a7fd7f4f33..f89330cf7c 100644
--- a/Utils.py
+++ b/Utils.py
@@ -553,6 +553,7 @@ def init_logging(name: str, loglevel: typing.Union[str, int] = logging.INFO, wri
         f"Archipelago ({__version__}) logging initialized"
         f" on {platform.platform()}"
         f" running Python {sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}"
+        f"{' (frozen)' if is_frozen() else ''}"
     )
 
 
diff --git a/WebHost.py b/WebHost.py
index afacd6288e..08ef3c4307 100644
--- a/WebHost.py
+++ b/WebHost.py
@@ -58,6 +58,7 @@ def create_ordered_tutorials_file() -> typing.List[typing.Dict[str, typing.Any]]
             worlds[game] = world
 
     base_target_path = Utils.local_path("WebHostLib", "static", "generated", "docs")
+    shutil.rmtree(base_target_path, ignore_errors=True)
     for game, world in worlds.items():
         # copy files from world's docs folder to the generated folder
         target_path = os.path.join(base_target_path, game)
diff --git a/WebHostLib/api/__init__.py b/WebHostLib/api/__init__.py
index 22d1f19f6b..4003243a28 100644
--- a/WebHostLib/api/__init__.py
+++ b/WebHostLib/api/__init__.py
@@ -5,7 +5,6 @@ from uuid import UUID
 from flask import Blueprint, abort, url_for
 
 import worlds.Files
-from .. import cache
 from ..models import Room, Seed
 
 api_endpoints = Blueprint('api', __name__, url_prefix="/api")
@@ -49,21 +48,4 @@ def room_info(room: UUID):
     }
 
 
-@api_endpoints.route('/datapackage')
-@cache.cached()
-def get_datapackage():
-    from worlds import network_data_package
-    return network_data_package
-
-
-@api_endpoints.route('/datapackage_checksum')
-@cache.cached()
-def get_datapackage_checksums():
-    from worlds import network_data_package
-    version_package = {
-        game: game_data["checksum"] for game, game_data in network_data_package["games"].items()
-    }
-    return version_package
-
-
-from . import generate, user  # trigger registration
+from . import generate, user, datapackage  # trigger registration
diff --git a/WebHostLib/api/datapackage.py b/WebHostLib/api/datapackage.py
new file mode 100644
index 0000000000..3fb472d95d
--- /dev/null
+++ b/WebHostLib/api/datapackage.py
@@ -0,0 +1,32 @@
+from flask import abort
+
+from Utils import restricted_loads
+from WebHostLib import cache
+from WebHostLib.models import GameDataPackage
+from . import api_endpoints
+
+
+@api_endpoints.route('/datapackage')
+@cache.cached()
+def get_datapackage():
+    from worlds import network_data_package
+    return network_data_package
+
+
+@api_endpoints.route('/datapackage/<string:checksum>')
+@cache.memoize(timeout=3600)
+def get_datapackage_by_checksum(checksum: str):
+    package = GameDataPackage.get(checksum=checksum)
+    if package:
+        return restricted_loads(package.data)
+    return abort(404)
+
+
+@api_endpoints.route('/datapackage_checksum')
+@cache.cached()
+def get_datapackage_checksums():
+    from worlds import network_data_package
+    version_package = {
+        game: game_data["checksum"] for game, game_data in network_data_package["games"].items()
+    }
+    return version_package
diff --git a/WebHostLib/templates/playerOptions/macros.html b/WebHostLib/templates/playerOptions/macros.html
index b34ac79a02..76cf076994 100644
--- a/WebHostLib/templates/playerOptions/macros.html
+++ b/WebHostLib/templates/playerOptions/macros.html
@@ -57,9 +57,9 @@
         <select id="{{ option_name }}-select" data-option-name="{{ option_name }}" {{ "disabled" if option.default == "random" }}>
             {% for key, val in option.special_range_names.items() %}
                 {% if option.default == val %}
-                    <option value="{{ val }}" selected>{{ key }} ({{ val }})</option>
+                    <option value="{{ val }}" selected>{{ key|replace("_", " ")|title }} ({{ val }})</option>
                 {% else %}
-                    <option value="{{ val }}">{{ key }} ({{ val }})</option>
+                    <option value="{{ val }}">{{ key|replace("_", " ")|title }} ({{ val }})</option>
                 {% endif %}
             {% endfor %}
             <option value="custom" hidden>Custom</option>
@@ -196,7 +196,7 @@
 {% macro OptionTitle(option_name, option) %}
     <label for="{{ option_name }}">
         {{ option.display_name|default(option_name) }}:
-        <span class="interactive" data-tooltip="{% filter dedent %}{{(option.__doc__ | default("Please document me!"))|escape }}{% endfilter %}">(?)</span>
+        <span class="interactive" data-tooltip="{{(option.__doc__ | default("Please document me!"))|replace('\n    ', '\n')|escape|trim}}">(?)</span>
     </label>
 {% endmacro %}
 
diff --git a/WebHostLib/templates/weightedOptions/macros.html b/WebHostLib/templates/weightedOptions/macros.html
index a6e4545fda..a1d3196971 100644
--- a/WebHostLib/templates/weightedOptions/macros.html
+++ b/WebHostLib/templates/weightedOptions/macros.html
@@ -18,7 +18,11 @@
         <tbody>
             {% for id, name in option.name_lookup.items() %}
                 {% if name != 'random' %}
-                    {{ RangeRow(option_name, option, option.get_option_name(id), name, False, name if option.get_option_name(option.default)|lower == name|lower else None) }}
+                    {% if option.default != 'random' %}
+                        {{ RangeRow(option_name, option, option.get_option_name(id), name, False, name if option.default == id else None) }}
+                    {% else %}
+                        {{ RangeRow(option_name, option, option.get_option_name(id), name) }}
+                    {% endif %}
                 {% endif %}
             {% endfor %}
             {{ RandomRow(option_name, option) }}
@@ -34,16 +38,16 @@
         Normal range: {{ option.range_start }} - {{ option.range_end }}
         {% if option.special_range_names %}
             <br /><br />
-            The following values has special meaning, and may fall outside the normal range.
+            The following values have special meanings, and may fall outside the normal range.
             <ul>
                 {% for name, value in option.special_range_names.items() %}
-                    <li>{{ value }}: {{ name }}</li>
+                    <li>{{ value }}: {{ name|replace("_", " ")|title }}</li>
                 {% endfor %}
             </ul>
         {% endif %}
         <div class="add-option-div">
             <input type="number" class="range-option-value" data-option="{{ option_name }}" />
-            <button class="add-range-option-button" data-option="{{ option_name }}">Add</button>
+            <button type="button" class="add-range-option-button" data-option="{{ option_name }}">Add</button>
         </div>
     </div>
     <table class="range-rows" data-option="{{ option_name }}">
@@ -68,7 +72,7 @@
         This option allows custom values only. Please enter your desired values below.
         <div class="custom-value-wrapper">
             <input class="custom-value" data-option="{{ option_name }}" placeholder="Custom Value" />
-            <button data-option="{{ option_name }}">Add</button>
+            <button type="button" data-option="{{ option_name }}">Add</button>
         </div>
         <table>
             <tbody>
@@ -85,14 +89,18 @@
         Custom values are also allowed for this option. To create one, enter it into the input box below.
         <div class="custom-value-wrapper">
             <input class="custom-value" data-option="{{ option_name }}" placeholder="Custom Value" />
-            <button data-option="{{ option_name }}">Add</button>
+            <button type="button" data-option="{{ option_name }}">Add</button>
         </div>
     </div>
     <table>
         <tbody>
             {% for id, name in option.name_lookup.items() %}
                 {% if name != 'random' %}
-                    {{ RangeRow(option_name, option, option.get_option_name(id), name, False, name if option.get_option_name(option.default)|lower == name else None) }}
+                    {% if option.default != 'random' %}
+                        {{ RangeRow(option_name, option, option.get_option_name(id), name, False, name if option.default == id else None) }}
+                    {% else %}
+                        {{ RangeRow(option_name, option, option.get_option_name(id), name) }}
+                    {% endif %}
                 {% endif %}
             {% endfor %}
             {{ RandomRow(option_name, option) }}
diff --git a/_speedups.pyx b/_speedups.pyx
index b4167ec5aa..4b083c2f9a 100644
--- a/_speedups.pyx
+++ b/_speedups.pyx
@@ -1,5 +1,6 @@
 #cython: language_level=3
-#distutils: language = c++
+#distutils: language = c
+#distutils: depends = intset.h
 
 """
 Provides faster implementation of some core parts.
@@ -13,7 +14,6 @@ from cpython cimport PyObject
 from typing import Any, Dict, Iterable, Iterator, Generator, Sequence, Tuple, TypeVar, Union, Set, List, TYPE_CHECKING
 from cymem.cymem cimport Pool
 from libc.stdint cimport int64_t, uint32_t
-from libcpp.set cimport set as std_set
 from collections import defaultdict
 
 cdef extern from *:
@@ -31,6 +31,27 @@ ctypedef int64_t ap_id_t
 cdef ap_player_t MAX_PLAYER_ID = 1000000  # limit the size of indexing array
 cdef size_t INVALID_SIZE = <size_t>(-1)  # this is all 0xff... adding 1 results in 0, but it's not negative
 
+# configure INTSET for player
+cdef extern from *:
+    """
+    #define INTSET_NAME ap_player_set
+    #define INTSET_TYPE uint32_t  // has to match ap_player_t
+    """
+
+# create INTSET for player
+cdef extern from "intset.h":
+    """
+    #undef INTSET_NAME
+    #undef INTSET_TYPE
+    """
+    ctypedef struct ap_player_set:
+        pass
+
+    ap_player_set* ap_player_set_new(size_t bucket_count) nogil
+    void ap_player_set_free(ap_player_set* set) nogil
+    bint ap_player_set_add(ap_player_set* set, ap_player_t val) nogil
+    bint ap_player_set_contains(ap_player_set* set, ap_player_t val) nogil
+
 
 cdef struct LocationEntry:
     # layout is so that
@@ -185,7 +206,7 @@ cdef class LocationStore:
     def find_item(self, slots: Set[int], seeked_item_id: int) -> Generator[Tuple[int, int, int, int, int], None, None]:
         cdef ap_id_t item = seeked_item_id
         cdef ap_player_t receiver
-        cdef std_set[ap_player_t] receivers
+        cdef ap_player_set* receivers
         cdef size_t slot_count = len(slots)
         if slot_count == 1:
             # specialized implementation for single slot
@@ -197,13 +218,20 @@ cdef class LocationStore:
                             yield entry.sender, entry.location, entry.item, entry.receiver, entry.flags
         elif slot_count:
             # generic implementation with lookup in set
-            for receiver in slots:
-                receivers.insert(receiver)
-            with nogil:
-                for entry in self.entries[:self.entry_count]:
-                    if entry.item == item and receivers.count(entry.receiver):
-                        with gil:
-                            yield entry.sender, entry.location, entry.item, entry.receiver, entry.flags
+            receivers = ap_player_set_new(min(1023, slot_count))  # limit top level struct to 16KB
+            if not receivers:
+                raise MemoryError()
+            try:
+                for receiver in slots:
+                    if not ap_player_set_add(receivers, receiver):
+                        raise MemoryError()
+                with nogil:
+                    for entry in self.entries[:self.entry_count]:
+                        if entry.item == item and ap_player_set_contains(receivers, entry.receiver):
+                            with gil:
+                                yield entry.sender, entry.location, entry.item, entry.receiver, entry.flags
+            finally:
+                ap_player_set_free(receivers)
 
     def get_for_player(self, slot: int) -> Dict[int, Set[int]]:
         cdef ap_player_t receiver = slot
diff --git a/_speedups.pyxbld b/_speedups.pyxbld
index e1fe19b2ef..974eaed03b 100644
--- a/_speedups.pyxbld
+++ b/_speedups.pyxbld
@@ -1,8 +1,10 @@
-# This file is required to get pyximport to work with C++.
-# Switching from std::set to a pure C implementation is still on the table to simplify everything.
+# This file is used when doing pyximport
+import os
 
 def make_ext(modname, pyxfilename):
     from distutils.extension import Extension
     return Extension(name=modname,
                      sources=[pyxfilename],
-                     language='c++')
+                     depends=["intset.h"],
+                     include_dirs=[os.getcwd()],
+                     language="c")
diff --git a/data/client.kv b/data/client.kv
index bf98fa1517..dc8a5c9c9d 100644
--- a/data/client.kv
+++ b/data/client.kv
@@ -13,6 +13,7 @@
     plum: "AF99EF"  # typically progression item
     salmon: "FA8072"  # typically trap item
     white: "FFFFFF"  # not used, if you want to change the generic text color change color in Label
+    orange: "FF7700"  # Used for command echo
 <Label>:
     color: "FFFFFF"
 <TabbedPanel>:
diff --git a/docs/CODEOWNERS b/docs/CODEOWNERS
index f93f6b9847..a253024569 100644
--- a/docs/CODEOWNERS
+++ b/docs/CODEOWNERS
@@ -70,7 +70,7 @@
 /worlds/heretic/ @Daivuk
 
 # Hollow Knight
-/worlds/hk/ @BadMagic100 @ThePhar
+/worlds/hk/ @BadMagic100 @qwint
 
 # Hylics 2
 /worlds/hylics2/ @TRPG0
diff --git a/inno_setup.iss b/inno_setup.iss
index a0f4944d98..f2e850e07f 100644
--- a/inno_setup.iss
+++ b/inno_setup.iss
@@ -89,6 +89,9 @@ Type: files; Name: "{app}\ArchipelagoPokemonClient.exe"
 Type: files; Name: "{app}\data\lua\connector_pkmn_rb.lua"
 Type: filesandordirs; Name: "{app}\lib\worlds\rogue-legacy"
 Type: dirifempty; Name: "{app}\lib\worlds\rogue-legacy"
+Type: files; Name: "{app}\lib\worlds\sc2wol.apworld"
+Type: filesandordirs; Name: "{app}\lib\worlds\sc2wol"
+Type: dirifempty; Name: "{app}\lib\worlds\sc2wol"
 Type: filesandordirs; Name: "{app}\lib\worlds\bk_sudoku"
 Type: dirifempty; Name: "{app}\lib\worlds\bk_sudoku"
 Type: files; Name: "{app}\ArchipelagoLauncher(DEBUG).exe"
diff --git a/intset.h b/intset.h
new file mode 100644
index 0000000000..fac84fb6f8
--- /dev/null
+++ b/intset.h
@@ -0,0 +1,135 @@
+/* A specialized unordered_set implementation for literals, where bucket_count
+ * is defined at initialization rather than increased automatically.
+ */
+#include <stddef.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef INTSET_NAME
+#error "Please #define INTSET_NAME ... before including intset.h"
+#endif
+
+#ifndef INTSET_TYPE
+#error "Please #define INTSET_TYPE ... before including intset.h"
+#endif
+
+/* macros to generate unique names from INTSET_NAME */
+#ifndef INTSET_CONCAT
+#define INTSET_CONCAT_(a, b) a ## b
+#define INTSET_CONCAT(a, b) INTSET_CONCAT_(a, b)
+#define INTSET_FUNC_(a, b) INTSET_CONCAT(a, _ ## b)
+#endif
+
+#define INTSET_FUNC(name) INTSET_FUNC_(INTSET_NAME, name)
+#define INTSET_BUCKET INTSET_CONCAT(INTSET_NAME, Bucket)
+#define INTSET_UNION INTSET_CONCAT(INTSET_NAME, Union)
+
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable : 4200)
+#endif
+
+
+typedef struct {
+    size_t count;
+    union INTSET_UNION {
+        INTSET_TYPE val;
+        INTSET_TYPE *data;
+    } v;
+} INTSET_BUCKET;
+
+typedef struct {
+    size_t bucket_count;
+    INTSET_BUCKET buckets[];
+} INTSET_NAME;
+
+static INTSET_NAME *INTSET_FUNC(new)(size_t buckets)
+{
+    size_t i, size;
+    INTSET_NAME *set;
+
+    if (buckets < 1)
+        buckets = 1;
+    if ((SIZE_MAX - sizeof(INTSET_NAME)) / sizeof(INTSET_BUCKET) < buckets)
+        return NULL;
+    size = sizeof(INTSET_NAME) + buckets * sizeof(INTSET_BUCKET);
+    set = (INTSET_NAME*)malloc(size);
+    if (!set)
+        return NULL;
+    memset(set, 0, size); /* gcc -fanalyzer does not understand this sets all buckets' count to 0 */
+    for (i = 0; i < buckets; i++) {
+        set->buckets[i].count = 0;
+    }
+    set->bucket_count = buckets;
+    return set;
+}
+
+static void INTSET_FUNC(free)(INTSET_NAME *set)
+{
+    size_t i;
+    if (!set)
+        return;
+    for (i = 0; i < set->bucket_count; i++) {
+        if (set->buckets[i].count > 1)
+            free(set->buckets[i].v.data);
+    }
+    free(set);
+}
+
+static bool INTSET_FUNC(contains)(INTSET_NAME *set, INTSET_TYPE val)
+{
+    size_t i;
+    INTSET_BUCKET* bucket = &set->buckets[(size_t)val % set->bucket_count];
+    if (bucket->count == 1)
+        return bucket->v.val == val;
+    for (i = 0; i < bucket->count; ++i) {
+        if (bucket->v.data[i] == val)
+            return true;
+    }
+    return false;
+}
+
+static bool INTSET_FUNC(add)(INTSET_NAME *set, INTSET_TYPE val)
+{
+    INTSET_BUCKET* bucket;
+
+    if (INTSET_FUNC(contains)(set, val))
+        return true; /* ok */
+
+    bucket = &set->buckets[(size_t)val % set->bucket_count];
+    if (bucket->count == 0) {
+        bucket->v.val = val;
+        bucket->count = 1;
+    } else if (bucket->count == 1) {
+        INTSET_TYPE old = bucket->v.val;
+        bucket->v.data = (INTSET_TYPE*)malloc(2 * sizeof(INTSET_TYPE));
+        if (!bucket->v.data) {
+            bucket->v.val = old;
+            return false; /* error */
+        }
+        bucket->v.data[0] = old;
+        bucket->v.data[1] = val;
+        bucket->count = 2;
+    } else {
+        size_t new_bucket_size;
+        INTSET_TYPE* new_bucket_data;
+
+        new_bucket_size = (bucket->count + 1) * sizeof(INTSET_TYPE);
+        new_bucket_data = (INTSET_TYPE*)realloc(bucket->v.data, new_bucket_size);
+        if (!new_bucket_data)
+            return false; /* error */
+        bucket->v.data = new_bucket_data;
+        bucket->v.data[bucket->count++] = val;
+    }
+    return true; /* success */
+}
+
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+#undef INTSET_FUNC
+#undef INTSET_BUCKET
+#undef INTSET_UNION
diff --git a/kvui.py b/kvui.py
index e9e495aef3..500203a881 100644
--- a/kvui.py
+++ b/kvui.py
@@ -3,6 +3,7 @@ import logging
 import sys
 import typing
 import re
+from collections import deque
 
 if sys.platform == "win32":
     import ctypes
@@ -380,6 +381,57 @@ class ConnectBarTextInput(TextInput):
         return super(ConnectBarTextInput, self).insert_text(s, from_undo=from_undo)
 
 
+def is_command_input(string: str) -> bool:
+    return len(string) > 0 and string[0] in "/!"
+
+
+class CommandPromptTextInput(TextInput):
+    MAXIMUM_HISTORY_MESSAGES = 50
+
+    def __init__(self, **kwargs) -> None:
+        super().__init__(**kwargs)
+        self._command_history_index = -1
+        self._command_history: typing.Deque[str] = deque(maxlen=CommandPromptTextInput.MAXIMUM_HISTORY_MESSAGES)
+    
+    def update_history(self, new_entry: str) -> None:
+        self._command_history_index = -1
+        if is_command_input(new_entry):
+            self._command_history.appendleft(new_entry)
+
+    def keyboard_on_key_down(
+        self,
+        window,
+        keycode: typing.Tuple[int, str],
+        text: typing.Optional[str],
+        modifiers: typing.List[str]
+    ) -> bool:
+        """
+        :param window: The kivy window object
+        :param keycode: A tuple of (keycode, keyname). Keynames are always lowercase
+        :param text: The text printed by this key, not accounting for modifiers, or `None` if no text.
+                     Seems to pretty naively interpret the keycode as unicode, so numlock can return odd characters.
+        :param modifiers: A list of string modifiers, like `ctrl` or `numlock`
+        """
+        if keycode[1] == 'up':
+            self._change_to_history_text_if_available(self._command_history_index + 1)
+            return True
+        if keycode[1] == 'down':
+            self._change_to_history_text_if_available(self._command_history_index - 1)
+            return True
+        return super().keyboard_on_key_down(window, keycode, text, modifiers)
+    
+    def _change_to_history_text_if_available(self, new_index: int) -> None:
+        if new_index < -1:
+            return
+        if new_index >= len(self._command_history):
+            return
+        self._command_history_index = new_index
+        if new_index == -1:
+            self.text = ""
+            return
+        self.text = self._command_history[self._command_history_index]
+
+
 class MessageBox(Popup):
     class MessageBoxLabel(Label):
         def __init__(self, **kwargs):
@@ -415,7 +467,7 @@ class GameManager(App):
         self.commandprocessor = ctx.command_processor(ctx)
         self.icon = r"data/icon.png"
         self.json_to_kivy_parser = KivyJSONtoTextParser(ctx)
-        self.log_panels = {}
+        self.log_panels: typing.Dict[str, Widget] = {}
 
         # keep track of last used command to autofill on click
         self.last_autofillable_command = "hint"
@@ -499,7 +551,7 @@ class GameManager(App):
         info_button = Button(size=(dp(100), dp(30)), text="Command:", size_hint_x=None)
         info_button.bind(on_release=self.command_button_action)
         bottom_layout.add_widget(info_button)
-        self.textinput = TextInput(size_hint_y=None, height=dp(30), multiline=False, write_tab=False)
+        self.textinput = CommandPromptTextInput(size_hint_y=None, height=dp(30), multiline=False, write_tab=False)
         self.textinput.bind(on_text_validate=self.on_message)
         self.textinput.text_validate_unfocus = False
         bottom_layout.add_widget(self.textinput)
@@ -557,14 +609,18 @@ class GameManager(App):
 
         self.ctx.exit_event.set()
 
-    def on_message(self, textinput: TextInput):
+    def on_message(self, textinput: CommandPromptTextInput):
         try:
             input_text = textinput.text.strip()
             textinput.text = ""
+            textinput.update_history(input_text)
 
             if self.ctx.input_requests > 0:
                 self.ctx.input_requests -= 1
                 self.ctx.input_queue.put_nowait(input_text)
+            elif is_command_input(input_text):
+                self.ctx.on_ui_command(input_text)
+                self.commandprocessor(input_text)
             elif input_text:
                 self.commandprocessor(input_text)
 
diff --git a/test/cpp/CMakeLists.txt b/test/cpp/CMakeLists.txt
new file mode 100644
index 0000000000..927b7494da
--- /dev/null
+++ b/test/cpp/CMakeLists.txt
@@ -0,0 +1,49 @@
+cmake_minimum_required(VERSION 3.5)
+project(ap-cpp-tests)
+
+enable_testing()
+
+find_package(GTest REQUIRED)
+
+if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    add_definitions("/source-charset:utf-8")
+    set(CMAKE_CXX_FLAGS_DEBUG "/MTd")
+    set(CMAKE_CXX_FLAGS_RELEASE "/MT")
+elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    # enable static analysis for gcc
+    add_compile_options(-fanalyzer -Werror)
+    # disable stuff that gets triggered by googletest
+    add_compile_options(-Wno-analyzer-malloc-leak)
+    # enable asan for gcc
+    add_compile_options(-fsanitize=address)
+    add_link_options(-fsanitize=address)
+endif ()
+
+add_executable(test_default)
+
+target_include_directories(test_default
+        PRIVATE
+        ${GTEST_INCLUDE_DIRS}
+)
+
+target_link_libraries(test_default
+        ${GTEST_BOTH_LIBRARIES}
+)
+
+add_test(
+        NAME test_default
+        COMMAND  test_default
+)
+
+set_property(
+        TEST test_default
+        PROPERTY ENVIRONMENT "ASAN_OPTIONS=allocator_may_return_null=1"
+)
+
+file(GLOB ITEMS *)
+foreach(item ${ITEMS})
+    if(IS_DIRECTORY ${item} AND EXISTS ${item}/CMakeLists.txt)
+        message(${item})
+        add_subdirectory(${item})
+    endif()
+endforeach()
diff --git a/test/cpp/README.md b/test/cpp/README.md
new file mode 100644
index 0000000000..792b9be77e
--- /dev/null
+++ b/test/cpp/README.md
@@ -0,0 +1,32 @@
+# C++ tests
+
+Test framework for C and C++ code in AP.
+
+## Adding a Test
+
+### GoogleTest
+
+Adding GoogleTests is as simple as creating a directory with
+* one or more `test_*.cpp` files that define tests using
+  [GoogleTest API](https://google.github.io/googletest/)
+* a `CMakeLists.txt` that adds the .cpp files to `test_default` target using
+  [target_sources](https://cmake.org/cmake/help/latest/command/target_sources.html)
+
+### CTest
+
+If either GoogleTest is not suitable for the test or the build flags / sources / libraries are incompatible,
+you can add another CTest to the project using add_target and add_test, similar to how it's done for `test_default`.
+
+## Running Tests
+
+* Install [CMake](https://cmake.org/).
+* Build and/or install GoogleTest and make sure
+  [CMake can find it](https://cmake.org/cmake/help/latest/module/FindGTest.html), or
+  [create a parent `CMakeLists.txt` that fetches GoogleTest](https://google.github.io/googletest/quickstart-cmake.html).
+* Enter the directory with the top-most `CMakeLists.txt` and run
+  ```sh
+  mkdir build
+  cmake -S . -B build/ -DCMAKE_BUILD_TYPE=Release
+  cmake --build build/ --config Release && \
+  ctest --test-dir build/ -C Release --output-on-failure
+  ```
diff --git a/test/cpp/intset/CMakeLists.txt b/test/cpp/intset/CMakeLists.txt
new file mode 100644
index 0000000000..175e0bd0b9
--- /dev/null
+++ b/test/cpp/intset/CMakeLists.txt
@@ -0,0 +1,4 @@
+target_sources(test_default
+        PRIVATE
+        ${CMAKE_CURRENT_SOURCE_DIR}/test_intset.cpp
+)
diff --git a/test/cpp/intset/test_intset.cpp b/test/cpp/intset/test_intset.cpp
new file mode 100644
index 0000000000..2f85bea960
--- /dev/null
+++ b/test/cpp/intset/test_intset.cpp
@@ -0,0 +1,105 @@
+#include <limits>
+#include <cstdint>
+#include <gtest/gtest.h>
+
+// uint32Set
+#define INTSET_NAME uint32Set
+#define INTSET_TYPE uint32_t
+#include "../../../intset.h"
+#undef INTSET_NAME
+#undef INTSET_TYPE
+
+// int64Set
+#define INTSET_NAME int64Set
+#define INTSET_TYPE int64_t
+#include "../../../intset.h"
+
+
+TEST(IntsetTest, ZeroBuckets)
+{
+    // trying to allocate with zero buckets has to either fail or be functioning
+    uint32Set *set = uint32Set_new(0);
+    if (!set)
+        return; // failed -> OK
+
+    EXPECT_FALSE(uint32Set_contains(set, 1));
+    EXPECT_TRUE(uint32Set_add(set, 1));
+    EXPECT_TRUE(uint32Set_contains(set, 1));
+    uint32Set_free(set);
+}
+
+TEST(IntsetTest, Duplicate)
+{
+    // adding the same number again can't fail
+    uint32Set *set = uint32Set_new(2);
+    ASSERT_TRUE(set);
+    EXPECT_TRUE(uint32Set_add(set, 0));
+    EXPECT_TRUE(uint32Set_add(set, 0));
+    EXPECT_TRUE(uint32Set_contains(set, 0));
+    uint32Set_free(set);
+}
+
+TEST(IntsetTest, SetAllocFailure)
+{
+    // try to allocate 100TB of RAM, should fail and return NULL
+    if (sizeof(size_t) < 8)
+        GTEST_SKIP() << "Alloc error not testable on 32bit";
+    int64Set *set = int64Set_new(6250000000000ULL);
+    EXPECT_FALSE(set);
+    int64Set_free(set);
+}
+
+TEST(IntsetTest, SetAllocOverflow)
+{
+    // try to overflow argument passed to malloc
+    int64Set *set = int64Set_new(std::numeric_limits<size_t>::max());
+    EXPECT_FALSE(set);
+    int64Set_free(set);
+}
+
+TEST(IntsetTest, NullFree)
+{
+    // free(NULL) should not try to free buckets
+    uint32Set_free(NULL);
+    int64Set_free(NULL);
+}
+
+TEST(IntsetTest, BucketRealloc)
+{
+    // add a couple of values to the same bucket to test growing the bucket
+    uint32Set* set = uint32Set_new(1);
+    ASSERT_TRUE(set);
+    EXPECT_FALSE(uint32Set_contains(set, 0));
+    EXPECT_TRUE(uint32Set_add(set, 0));
+    EXPECT_TRUE(uint32Set_contains(set, 0));
+    for (uint32_t i = 1; i < 32; ++i) {
+        EXPECT_TRUE(uint32Set_add(set, i));
+        EXPECT_TRUE(uint32Set_contains(set, i - 1));
+        EXPECT_TRUE(uint32Set_contains(set, i));
+        EXPECT_FALSE(uint32Set_contains(set, i + 1));
+    }
+    uint32Set_free(set);
+}
+
+TEST(IntSet, Max)
+{
+    constexpr auto n = std::numeric_limits<uint32_t>::max();
+    uint32Set *set = uint32Set_new(1);
+    ASSERT_TRUE(set);
+    EXPECT_FALSE(uint32Set_contains(set, n));
+    EXPECT_TRUE(uint32Set_add(set, n));
+    EXPECT_TRUE(uint32Set_contains(set, n));
+    uint32Set_free(set);
+}
+
+TEST(InsetTest, Negative)
+{
+    constexpr auto n = std::numeric_limits<int64_t>::min();
+    static_assert(n < 0, "n not negative");
+    int64Set *set = int64Set_new(3);
+    ASSERT_TRUE(set);
+    EXPECT_FALSE(int64Set_contains(set, n));
+    EXPECT_TRUE(int64Set_add(set, n));
+    EXPECT_TRUE(int64Set_contains(set, n));
+    int64Set_free(set);
+}
diff --git a/test/general/__init__.py b/test/general/__init__.py
index 1d4fc80c3e..8afd849765 100644
--- a/test/general/__init__.py
+++ b/test/general/__init__.py
@@ -2,6 +2,7 @@ from argparse import Namespace
 from typing import List, Optional, Tuple, Type, Union
 
 from BaseClasses import CollectionState, Item, ItemClassification, Location, MultiWorld, Region
+from worlds import network_data_package
 from worlds.AutoWorld import World, call_all
 
 gen_steps = ("generate_early", "create_regions", "create_items", "set_rules", "generate_basic", "pre_fill")
@@ -60,6 +61,10 @@ class TestWorld(World):
     hidden = True
 
 
+# add our test world to the data package, so we can test it later
+network_data_package["games"][TestWorld.game] = TestWorld.get_data_package_data()
+
+
 def generate_test_multiworld(players: int = 1) -> MultiWorld:
     """
     Generates a multiworld using a special Test Case World class, and seed of 0.
diff --git a/test/general/test_ids.py b/test/general/test_ids.py
index e4010af394..e51a070c1f 100644
--- a/test/general/test_ids.py
+++ b/test/general/test_ids.py
@@ -1,6 +1,7 @@
 import unittest
 
 from Fill import distribute_items_restrictive
+from worlds import network_data_package
 from worlds.AutoWorld import AutoWorldRegister, call_all
 from . import setup_solo_multiworld
 
@@ -84,3 +85,4 @@ class TestIDs(unittest.TestCase):
                                           f"{loc_name} is not a valid item name for location_name_to_id")
                     self.assertIsInstance(loc_id, int,
                                           f"{loc_id} for {loc_name} should be an int")
+                self.assertEqual(datapackage["checksum"], network_data_package["games"][gamename]["checksum"])
diff --git a/test/hosting/webhost.py b/test/hosting/webhost.py
index e1e31ae466..4db605e8c1 100644
--- a/test/hosting/webhost.py
+++ b/test/hosting/webhost.py
@@ -66,12 +66,19 @@ def create_room(app_client: "FlaskClient", seed: str, auto_start: bool = False)
 def start_room(app_client: "FlaskClient", room_id: str, timeout: float = 30) -> str:
     from time import sleep
 
+    import pony.orm
+
     poll_interval = .2
 
     print(f"Starting room {room_id}")
     no_timeout = timeout <= 0
     while no_timeout or timeout > 0:
-        response = app_client.get(f"/room/{room_id}")
+        try:
+            response = app_client.get(f"/room/{room_id}")
+        except pony.orm.core.OptimisticCheckError:
+            # hoster wrote to room during our transaction
+            continue
+
         assert response.status_code == 200, f"Starting room for {room_id} failed: status {response.status_code}"
         match = re.search(r"/connect ([\w:.\-]+)", response.text)
         if match:
diff --git a/test/netutils/test_location_store.py b/test/netutils/test_location_store.py
index a7f117255f..f3e83989be 100644
--- a/test/netutils/test_location_store.py
+++ b/test/netutils/test_location_store.py
@@ -1,4 +1,5 @@
 # Tests for _speedups.LocationStore and NetUtils._LocationStore
+import os
 import typing
 import unittest
 import warnings
@@ -7,6 +8,8 @@ from NetUtils import LocationStore, _LocationStore
 State = typing.Dict[typing.Tuple[int, int], typing.Set[int]]
 RawLocations = typing.Dict[int, typing.Dict[int, typing.Tuple[int, int, int]]]
 
+ci = bool(os.environ.get("CI"))  # always set in GitHub actions
+
 sample_data: RawLocations = {
     1: {
         11: (21, 2, 7),
@@ -24,6 +27,9 @@ sample_data: RawLocations = {
     3: {
         9: (99, 4, 0),
     },
+    5: {
+        9: (99, 5, 0),
+    }
 }
 
 empty_state: State = {
@@ -45,14 +51,14 @@ class Base:
         store: typing.Union[LocationStore, _LocationStore]
 
         def test_len(self) -> None:
-            self.assertEqual(len(self.store), 4)
+            self.assertEqual(len(self.store), 5)
             self.assertEqual(len(self.store[1]), 3)
 
         def test_key_error(self) -> None:
             with self.assertRaises(KeyError):
                 _ = self.store[0]
             with self.assertRaises(KeyError):
-                _ = self.store[5]
+                _ = self.store[6]
             locations = self.store[1]  # no Exception
             with self.assertRaises(KeyError):
                 _ = locations[7]
@@ -71,7 +77,7 @@ class Base:
             self.assertEqual(self.store[1].get(10, (None, None, None)), (None, None, None))
 
         def test_iter(self) -> None:
-            self.assertEqual(sorted(self.store), [1, 2, 3, 4])
+            self.assertEqual(sorted(self.store), [1, 2, 3, 4, 5])
             self.assertEqual(len(self.store), len(sample_data))
             self.assertEqual(list(self.store[1]), [11, 12, 13])
             self.assertEqual(len(self.store[1]), len(sample_data[1]))
@@ -85,13 +91,26 @@ class Base:
             self.assertEqual(sorted(self.store[1].items())[0][1], self.store[1][11])
 
         def test_find_item(self) -> None:
+            # empty player set
             self.assertEqual(sorted(self.store.find_item(set(), 99)), [])
+            # no such player, single
+            self.assertEqual(sorted(self.store.find_item({6}, 99)), [])
+            # no such player, set
+            self.assertEqual(sorted(self.store.find_item({7, 8, 9}, 99)), [])
+            # no such item
             self.assertEqual(sorted(self.store.find_item({3}, 1)), [])
-            self.assertEqual(sorted(self.store.find_item({5}, 99)), [])
+            # valid matches
             self.assertEqual(sorted(self.store.find_item({3}, 99)),
                              [(4, 9, 99, 3, 0)])
             self.assertEqual(sorted(self.store.find_item({3, 4}, 99)),
                              [(3, 9, 99, 4, 0), (4, 9, 99, 3, 0)])
+            self.assertEqual(sorted(self.store.find_item({2, 3, 4}, 99)),
+                             [(3, 9, 99, 4, 0), (4, 9, 99, 3, 0)])
+            # test hash collision in set
+            self.assertEqual(sorted(self.store.find_item({3, 5}, 99)),
+                             [(4, 9, 99, 3, 0), (5, 9, 99, 5, 0)])
+            self.assertEqual(sorted(self.store.find_item(set(range(2048)), 13)),
+                             [(1, 13, 13, 1, 0)])
 
         def test_get_for_player(self) -> None:
             self.assertEqual(self.store.get_for_player(3), {4: {9}})
@@ -196,18 +215,20 @@ class TestPurePythonLocationStoreConstructor(Base.TestLocationStoreConstructor):
         super().setUp()
 
 
-@unittest.skipIf(LocationStore is _LocationStore, "_speedups not available")
+@unittest.skipIf(LocationStore is _LocationStore and not ci, "_speedups not available")
 class TestSpeedupsLocationStore(Base.TestLocationStore):
     """Run base method tests for cython implementation."""
     def setUp(self) -> None:
+        self.assertFalse(LocationStore is _LocationStore, "Failed to load _speedups")
         self.store = LocationStore(sample_data)
         super().setUp()
 
 
-@unittest.skipIf(LocationStore is _LocationStore, "_speedups not available")
+@unittest.skipIf(LocationStore is _LocationStore and not ci, "_speedups not available")
 class TestSpeedupsLocationStoreConstructor(Base.TestLocationStoreConstructor):
     """Run base constructor tests and tests the additional constraints for cython implementation."""
     def setUp(self) -> None:
+        self.assertFalse(LocationStore is _LocationStore, "Failed to load _speedups")
         self.type = LocationStore
         super().setUp()
 
diff --git a/worlds/AutoWorld.py b/worlds/AutoWorld.py
index 6e17f023f6..bed375cf08 100644
--- a/worlds/AutoWorld.py
+++ b/worlds/AutoWorld.py
@@ -123,8 +123,8 @@ class WebWorldRegister(type):
             assert group.options, "A custom defined Option Group must contain at least one Option."
             # catch incorrectly titled versions of the prebuilt groups so they don't create extra groups
             title_name = group.name.title()
-            if title_name in prebuilt_options:
-                group.name = title_name
+            assert title_name not in prebuilt_options or title_name == group.name, \
+                f"Prebuilt group name \"{group.name}\" must be \"{title_name}\""
 
             if group.name == "Item & Location Options":
                 assert not any(option in item_and_loc_options for option in group.options), \
diff --git a/worlds/__init__.py b/worlds/__init__.py
index 83ee96131a..8d784a5ba4 100644
--- a/worlds/__init__.py
+++ b/worlds/__init__.py
@@ -1,4 +1,5 @@
 import importlib
+import importlib.util
 import logging
 import os
 import sys
@@ -107,8 +108,9 @@ for folder in (folder for folder in (user_folder, local_folder) if folder):
         if not entry.name.startswith(("_", ".")):
             file_name = entry.name if relative else os.path.join(folder, entry.name)
             if entry.is_dir():
-                init_file_path = os.path.join(entry.path, '__init__.py')
-                if os.path.isfile(init_file_path):
+                if os.path.isfile(os.path.join(entry.path, '__init__.py')):
+                    world_sources.append(WorldSource(file_name, relative=relative))
+                elif os.path.isfile(os.path.join(entry.path, '__init__.pyc')):
                     world_sources.append(WorldSource(file_name, relative=relative))
                 else:
                     logging.warning(f"excluding {entry.name} from world sources because it has no __init__.py")
diff --git a/worlds/_sc2common/bot/sc2process.py b/worlds/_sc2common/bot/sc2process.py
index e366321659..f74ed9c18f 100644
--- a/worlds/_sc2common/bot/sc2process.py
+++ b/worlds/_sc2common/bot/sc2process.py
@@ -28,6 +28,11 @@ class kill_switch:
         logger.debug("kill_switch: Add switch")
         cls._to_kill.append(value)
 
+    @classmethod
+    def kill(cls, value):
+        logger.info(f"kill_switch: Process cleanup for 1 process")
+        value._clean(verbose=False)
+
     @classmethod
     def kill_all(cls):
         logger.info(f"kill_switch: Process cleanup for {len(cls._to_kill)} processes")
@@ -116,7 +121,7 @@ class SC2Process:
     async def __aexit__(self, *args):
         logger.exception("async exit")
         await self._close_connection()
-        kill_switch.kill_all()
+        kill_switch.kill(self)
         signal.signal(signal.SIGINT, signal.SIG_DFL)
 
     @property
diff --git a/worlds/adventure/Options.py b/worlds/adventure/Options.py
index 9e0cc9d686..e6a8e4c202 100644
--- a/worlds/adventure/Options.py
+++ b/worlds/adventure/Options.py
@@ -2,7 +2,8 @@ from __future__ import annotations
 
 from typing import Dict
 
-from Options import Choice, Option, DefaultOnToggle, DeathLink, Range, Toggle
+from dataclasses import dataclass
+from Options import Choice, Option, DefaultOnToggle, DeathLink, Range, Toggle, PerGameCommonOptions
 
 
 class FreeincarnateMax(Range):
@@ -223,22 +224,22 @@ class StartCastle(Choice):
     option_white = 2
     default = option_yellow
 
+@dataclass
+class AdventureOptions(PerGameCommonOptions):
+    dragon_slay_check: DragonSlayCheck
+    death_link: DeathLink
+    bat_logic: BatLogic
+    freeincarnate_max: FreeincarnateMax
+    dragon_rando_type: DragonRandoType
+    connector_multi_slot: ConnectorMultiSlot
+    yorgle_speed: YorgleStartingSpeed
+    yorgle_min_speed: YorgleMinimumSpeed
+    grundle_speed: GrundleStartingSpeed
+    grundle_min_speed: GrundleMinimumSpeed
+    rhindle_speed: RhindleStartingSpeed
+    rhindle_min_speed: RhindleMinimumSpeed
+    difficulty_switch_a: DifficultySwitchA
+    difficulty_switch_b: DifficultySwitchB
+    start_castle: StartCastle
 
-adventure_option_definitions: Dict[str, type(Option)] = {
-    "dragon_slay_check": DragonSlayCheck,
-    "death_link": DeathLink,
-    "bat_logic": BatLogic,
-    "freeincarnate_max": FreeincarnateMax,
-    "dragon_rando_type": DragonRandoType,
-    "connector_multi_slot": ConnectorMultiSlot,
-    "yorgle_speed": YorgleStartingSpeed,
-    "yorgle_min_speed": YorgleMinimumSpeed,
-    "grundle_speed": GrundleStartingSpeed,
-    "grundle_min_speed": GrundleMinimumSpeed,
-    "rhindle_speed": RhindleStartingSpeed,
-    "rhindle_min_speed": RhindleMinimumSpeed,
-    "difficulty_switch_a": DifficultySwitchA,
-    "difficulty_switch_b": DifficultySwitchB,
-    "start_castle": StartCastle,
 
-}
diff --git a/worlds/adventure/Regions.py b/worlds/adventure/Regions.py
index 00617b2f71..e72806ca45 100644
--- a/worlds/adventure/Regions.py
+++ b/worlds/adventure/Regions.py
@@ -1,4 +1,5 @@
 from BaseClasses import MultiWorld, Region, Entrance, LocationProgressType
+from Options import PerGameCommonOptions
 from .Locations import location_table, LocationData, AdventureLocation, dragon_room_to_region
 
 
@@ -24,7 +25,7 @@ def connect(world: MultiWorld, player: int, source: str, target: str, rule: call
         connect(world, player, target, source, rule, True)
 
 
-def create_regions(multiworld: MultiWorld, player: int, dragon_rooms: []) -> None:
+def create_regions(options: PerGameCommonOptions, multiworld: MultiWorld, player: int, dragon_rooms: []) -> None:
 
     menu = Region("Menu", player, multiworld)
 
@@ -74,7 +75,7 @@ def create_regions(multiworld: MultiWorld, player: int, dragon_rooms: []) -> Non
     credits_room_far_side.exits.append(Entrance(player, "CreditsFromFarSide", credits_room_far_side))
     multiworld.regions.append(credits_room_far_side)
 
-    dragon_slay_check = multiworld.dragon_slay_check[player].value
+    dragon_slay_check = options.dragon_slay_check.value
     priority_locations = determine_priority_locations(multiworld, dragon_slay_check)
 
     for name, location_data in location_table.items():
diff --git a/worlds/adventure/Rules.py b/worlds/adventure/Rules.py
index 6f4b53faa1..9302953012 100644
--- a/worlds/adventure/Rules.py
+++ b/worlds/adventure/Rules.py
@@ -6,7 +6,7 @@ from BaseClasses import LocationProgressType
 
 def set_rules(self) -> None:
     world = self.multiworld
-    use_bat_logic = world.bat_logic[self.player].value == BatLogic.option_use_logic
+    use_bat_logic = self.options.bat_logic.value == BatLogic.option_use_logic
 
     set_rule(world.get_entrance("YellowCastlePort", self.player),
              lambda state: state.has("Yellow Key", self.player))
@@ -28,7 +28,7 @@ def set_rules(self) -> None:
                  lambda state: state.has("Bridge", self.player) or
                                state.has("Magnet", self.player))
 
-    dragon_slay_check = world.dragon_slay_check[self.player].value
+    dragon_slay_check = self.options.dragon_slay_check.value
     if dragon_slay_check:
         if self.difficulty_switch_b == DifficultySwitchB.option_hard_with_unlock_item:
             set_rule(world.get_location("Slay Yorgle", self.player),
diff --git a/worlds/adventure/__init__.py b/worlds/adventure/__init__.py
index 1c2583b3ed..ed5ebbd3dc 100644
--- a/worlds/adventure/__init__.py
+++ b/worlds/adventure/__init__.py
@@ -15,7 +15,8 @@ from Options import AssembleOptions
 from worlds.AutoWorld import WebWorld, World
 from Fill import fill_restrictive
 from worlds.generic.Rules import add_rule, set_rule
-from .Options import adventure_option_definitions, DragonRandoType, DifficultySwitchA, DifficultySwitchB
+from .Options import DragonRandoType, DifficultySwitchA, DifficultySwitchB, \
+    AdventureOptions
 from .Rom import get_base_rom_bytes, get_base_rom_path, AdventureDeltaPatch, apply_basepatch, \
     AdventureAutoCollectLocation
 from .Items import item_table, ItemData, nothing_item_id, event_table, AdventureItem, standard_item_max
@@ -109,7 +110,7 @@ class AdventureWorld(World):
     game: ClassVar[str] = "Adventure"
     web: ClassVar[WebWorld] = AdventureWeb()
 
-    option_definitions: ClassVar[Dict[str, AssembleOptions]] = adventure_option_definitions
+    options_dataclass = AdventureOptions
     settings: ClassVar[AdventureSettings]
     item_name_to_id: ClassVar[Dict[str, int]] = {name: data.id for name, data in item_table.items()}
     location_name_to_id: ClassVar[Dict[str, int]] = {name: data.location_id for name, data in location_table.items()}
@@ -149,18 +150,18 @@ class AdventureWorld(World):
             bytearray(f"ADVENTURE{__version__.replace('.', '')[:3]}_{self.player}_{self.multiworld.seed}", "utf8")[:21]
         self.rom_name.extend([0] * (21 - len(self.rom_name)))
 
-        self.dragon_rando_type = self.multiworld.dragon_rando_type[self.player].value
-        self.dragon_slay_check = self.multiworld.dragon_slay_check[self.player].value
-        self.connector_multi_slot = self.multiworld.connector_multi_slot[self.player].value
-        self.yorgle_speed = self.multiworld.yorgle_speed[self.player].value
-        self.yorgle_min_speed = self.multiworld.yorgle_min_speed[self.player].value
-        self.grundle_speed = self.multiworld.grundle_speed[self.player].value
-        self.grundle_min_speed = self.multiworld.grundle_min_speed[self.player].value
-        self.rhindle_speed = self.multiworld.rhindle_speed[self.player].value
-        self.rhindle_min_speed = self.multiworld.rhindle_min_speed[self.player].value
-        self.difficulty_switch_a = self.multiworld.difficulty_switch_a[self.player].value
-        self.difficulty_switch_b = self.multiworld.difficulty_switch_b[self.player].value
-        self.start_castle = self.multiworld.start_castle[self.player].value
+        self.dragon_rando_type = self.options.dragon_rando_type.value
+        self.dragon_slay_check = self.options.dragon_slay_check.value
+        self.connector_multi_slot = self.options.connector_multi_slot.value
+        self.yorgle_speed = self.options.yorgle_speed.value
+        self.yorgle_min_speed = self.options.yorgle_min_speed.value
+        self.grundle_speed = self.options.grundle_speed.value
+        self.grundle_min_speed = self.options.grundle_min_speed.value
+        self.rhindle_speed = self.options.rhindle_speed.value
+        self.rhindle_min_speed = self.options.rhindle_min_speed.value
+        self.difficulty_switch_a = self.options.difficulty_switch_a.value
+        self.difficulty_switch_b = self.options.difficulty_switch_b.value
+        self.start_castle = self.options.start_castle.value
         self.created_items = 0
 
         if self.dragon_slay_check == 0:
@@ -227,7 +228,7 @@ class AdventureWorld(World):
         extra_filler_count = num_locations - self.created_items
 
         # traps would probably go here, if enabled
-        freeincarnate_max = self.multiworld.freeincarnate_max[self.player].value
+        freeincarnate_max = self.options.freeincarnate_max.value
         actual_freeincarnates = min(extra_filler_count, freeincarnate_max)
         self.multiworld.itempool += [self.create_item("Freeincarnate") for _ in range(actual_freeincarnates)]
         self.created_items += actual_freeincarnates
@@ -247,7 +248,7 @@ class AdventureWorld(World):
                 self.created_items += 1
 
     def create_regions(self) -> None:
-        create_regions(self.multiworld, self.player, self.dragon_rooms)
+        create_regions(self.options, self.multiworld, self.player, self.dragon_rooms)
 
     set_rules = set_rules
 
@@ -354,7 +355,7 @@ class AdventureWorld(World):
         auto_collect_locations: [AdventureAutoCollectLocation] = []
         local_item_to_location: {int, int} = {}
         bat_no_touch_locs: [LocationData] = []
-        bat_logic: int = self.multiworld.bat_logic[self.player].value
+        bat_logic: int = self.options.bat_logic.value
         try:
             rom_deltas: { int, int } = {}
             self.place_dragons(rom_deltas)
@@ -421,7 +422,7 @@ class AdventureWorld(World):
                 item_position_data_start = get_item_position_data_start(unplaced_item.table_index)
                 rom_deltas[item_position_data_start] = 0xff
 
-            if self.multiworld.connector_multi_slot[self.player].value:
+            if self.options.connector_multi_slot.value:
                 rom_deltas[connector_port_offset] = (self.player & 0xff)
             else:
                 rom_deltas[connector_port_offset] = 0
diff --git a/worlds/aquaria/Locations.py b/worlds/aquaria/Locations.py
index 7360efde06..33d165db41 100644
--- a/worlds/aquaria/Locations.py
+++ b/worlds/aquaria/Locations.py
@@ -185,7 +185,7 @@ class AquariaLocations:
         "Mithalas City, second bulb at the end of the top path": 698040,
         "Mithalas City, bulb in the top path": 698036,
         "Mithalas City, Mithalas Pot": 698174,
-        "Mithalas City, urn in the Cathedral flower tube entrance": 698128,
+        "Mithalas City, urn in the Castle flower tube entrance": 698128,
     }
 
     locations_mithalas_city_fishpass = {
@@ -246,7 +246,7 @@ class AquariaLocations:
         "Kelp Forest top left area, bulb in the bottom left clearing": 698044,
         "Kelp Forest top left area, bulb in the path down from the top left clearing": 698045,
         "Kelp Forest top left area, bulb in the top left clearing": 698046,
-        "Kelp Forest top left, Jelly Egg": 698185,
+        "Kelp Forest top left area, Jelly Egg": 698185,
     }
 
     locations_forest_tl_fp = {
@@ -332,7 +332,7 @@ class AquariaLocations:
     }
 
     locations_veil_tr_l = {
-        "The Veil top right area, bulb in the top of the waterfall": 698080,
+        "The Veil top right area, bulb at the top of the waterfall": 698080,
         "The Veil top right area, Transturtle": 698210,
     }
 
diff --git a/worlds/aquaria/Regions.py b/worlds/aquaria/Regions.py
index f2f85749f3..2812025925 100755
--- a/worlds/aquaria/Regions.py
+++ b/worlds/aquaria/Regions.py
@@ -771,6 +771,7 @@ class AquariaRegions:
         self.__connect_regions("Sunken City left area", "Sunken City boss area",
                                self.sunken_city_l, self.sunken_city_boss,
                                lambda state: _has_beast_form(state, self.player) and
+                                             _has_sun_form(state, self.player) and
                                              _has_energy_form(state, self.player) and
                                              _has_bind_song(state, self.player))
 
@@ -983,7 +984,7 @@ class AquariaRegions:
                  lambda state: _has_damaging_item(state, self.player))
         add_rule(self.multiworld.get_location("Mithalas City, third urn in the city reserve", self.player),
                  lambda state: _has_damaging_item(state, self.player))
-        add_rule(self.multiworld.get_location("Mithalas City, urn in the Cathedral flower tube entrance", self.player),
+        add_rule(self.multiworld.get_location("Mithalas City, urn in the Castle flower tube entrance", self.player),
                  lambda state: _has_damaging_item(state, self.player))
         add_rule(self.multiworld.get_location("Mithalas City Castle, urn in the bedroom", self.player),
                  lambda state: _has_damaging_item(state, self.player))
@@ -1023,7 +1024,7 @@ class AquariaRegions:
                  lambda state: _has_hot_soup(state, self.player) and _has_beast_form(state, self.player))
         add_rule(self.multiworld.get_location("Sun Worm path, second cliff bulb", self.player),
                  lambda state: _has_hot_soup(state, self.player) and _has_beast_form(state, self.player))
-        add_rule(self.multiworld.get_location("The Veil top right area, bulb in the top of the waterfall", self.player),
+        add_rule(self.multiworld.get_location("The Veil top right area, bulb at the top of the waterfall", self.player),
                  lambda state: _has_hot_soup(state, self.player) and _has_beast_form(state, self.player))
 
     def __adjusting_under_rock_location(self) -> None:
@@ -1175,7 +1176,7 @@ class AquariaRegions:
         self.multiworld.get_location("Sun Worm path, second cliff bulb",
                                      self.player).item_rule =\
             lambda item: item.classification != ItemClassification.progression
-        self.multiworld.get_location("The Veil top right area, bulb in the top of the waterfall",
+        self.multiworld.get_location("The Veil top right area, bulb at the top of the waterfall",
                                      self.player).item_rule =\
             lambda item: item.classification != ItemClassification.progression
         self.multiworld.get_location("Bubble Cave, bulb in the left cave wall",
diff --git a/worlds/aquaria/__init__.py b/worlds/aquaria/__init__.py
index 3c0cc3bded..ce46aeea75 100644
--- a/worlds/aquaria/__init__.py
+++ b/worlds/aquaria/__init__.py
@@ -167,14 +167,10 @@ class AquariaWorld(World):
             self.__pre_fill_item("Transturtle Simon Says", "Arnassi Ruins, Transturtle", precollected)
             self.__pre_fill_item("Transturtle Arnassi Ruins", "Simon Says area, Transturtle", precollected)
         for name, data in item_table.items():
-            if name in precollected:
-                precollected.remove(name)
-                self.multiworld.itempool.append(self.create_item(self.get_filler_item_name()))
-            else:
-                if name not in self.exclude:
-                    for i in range(data.count):
-                        item = self.create_item(name)
-                        self.multiworld.itempool.append(item)
+            if name not in self.exclude:
+                for i in range(data.count):
+                    item = self.create_item(name)
+                    self.multiworld.itempool.append(item)
 
     def set_rules(self) -> None:
         """
diff --git a/worlds/aquaria/test/__init__.py b/worlds/aquaria/test/__init__.py
index 198ccb0f62..5c63c9bb29 100644
--- a/worlds/aquaria/test/__init__.py
+++ b/worlds/aquaria/test/__init__.py
@@ -56,7 +56,7 @@ after_home_water_locations = [
     "Mithalas City, second bulb at the end of the top path",
     "Mithalas City, bulb in the top path",
     "Mithalas City, Mithalas Pot",
-    "Mithalas City, urn in the Cathedral flower tube entrance",
+    "Mithalas City, urn in the Castle flower tube entrance",
     "Mithalas City, Doll",
     "Mithalas City, urn inside a home fish pass",
     "Mithalas City Castle, bulb in the flesh hole",
@@ -93,7 +93,7 @@ after_home_water_locations = [
     "Kelp Forest top left area, bulb in the bottom left clearing",
     "Kelp Forest top left area, bulb in the path down from the top left clearing",
     "Kelp Forest top left area, bulb in the top left clearing",
-    "Kelp Forest top left, Jelly Egg",
+    "Kelp Forest top left area, Jelly Egg",
     "Kelp Forest top left area, bulb close to the Verse Egg",
     "Kelp Forest top left area, Verse Egg",
     "Kelp Forest top right area, bulb under the rock in the right path",
@@ -125,7 +125,7 @@ after_home_water_locations = [
     "Turtle cave, Urchin Costume",
     "The Veil top right area, bulb in the middle of the wall jump cliff",
     "The Veil top right area, Golden Starfish",
-    "The Veil top right area, bulb in the top of the waterfall",
+    "The Veil top right area, bulb at the top of the waterfall",
     "The Veil top right area, Transturtle",
     "The Veil bottom area, bulb in the left path",
     "The Veil bottom area, bulb in the spirit path",
diff --git a/worlds/aquaria/test/test_beast_form_access.py b/worlds/aquaria/test/test_beast_form_access.py
index c25070d470..4bb4d5656c 100644
--- a/worlds/aquaria/test/test_beast_form_access.py
+++ b/worlds/aquaria/test/test_beast_form_access.py
@@ -20,14 +20,14 @@ class BeastFormAccessTest(AquariaTestBase):
             "Mithalas City, second bulb at the end of the top path",
             "Mithalas City, bulb in the top path",
             "Mithalas City, Mithalas Pot",
-            "Mithalas City, urn in the Cathedral flower tube entrance",
+            "Mithalas City, urn in the Castle flower tube entrance",
             "Mermog cave, Piranha Egg",
             "Mithalas Cathedral, Mithalan Dress",
             "Turtle cave, bulb in Bubble Cliff",
             "Turtle cave, Urchin Costume",
             "Sun Worm path, first cliff bulb",
             "Sun Worm path, second cliff bulb",
-            "The Veil top right area, bulb in the top of the waterfall",
+            "The Veil top right area, bulb at the top of the waterfall",
             "Bubble Cave, bulb in the left cave wall",
             "Bubble Cave, bulb in the right cave wall (behind the ice crystal)",
             "Bubble Cave, Verse Egg",
diff --git a/worlds/aquaria/test/test_no_progression_hard_hidden_locations.py b/worlds/aquaria/test/test_no_progression_hard_hidden_locations.py
index 817b9547a8..b0d2b0d880 100644
--- a/worlds/aquaria/test/test_no_progression_hard_hidden_locations.py
+++ b/worlds/aquaria/test/test_no_progression_hard_hidden_locations.py
@@ -30,7 +30,7 @@ class UNoProgressionHardHiddenTest(AquariaTestBase):
         "Final Boss area, bulb in the boss third form room",
         "Sun Worm path, first cliff bulb",
         "Sun Worm path, second cliff bulb",
-        "The Veil top right area, bulb in the top of the waterfall",
+        "The Veil top right area, bulb at the top of the waterfall",
         "Bubble Cave, bulb in the left cave wall",
         "Bubble Cave, bulb in the right cave wall (behind the ice crystal)",
         "Bubble Cave, Verse Egg",
diff --git a/worlds/aquaria/test/test_progression_hard_hidden_locations.py b/worlds/aquaria/test/test_progression_hard_hidden_locations.py
index 2b7c8ddac9..390fc40b29 100644
--- a/worlds/aquaria/test/test_progression_hard_hidden_locations.py
+++ b/worlds/aquaria/test/test_progression_hard_hidden_locations.py
@@ -30,7 +30,7 @@ class UNoProgressionHardHiddenTest(AquariaTestBase):
         "Final Boss area, bulb in the boss third form room",
         "Sun Worm path, first cliff bulb",
         "Sun Worm path, second cliff bulb",
-        "The Veil top right area, bulb in the top of the waterfall",
+        "The Veil top right area, bulb at the top of the waterfall",
         "Bubble Cave, bulb in the left cave wall",
         "Bubble Cave, bulb in the right cave wall (behind the ice crystal)",
         "Bubble Cave, Verse Egg",
diff --git a/worlds/aquaria/test/test_sun_form_access.py b/worlds/aquaria/test/test_sun_form_access.py
index dfd732ec91..cbe8c08a52 100644
--- a/worlds/aquaria/test/test_sun_form_access.py
+++ b/worlds/aquaria/test/test_sun_form_access.py
@@ -18,6 +18,9 @@ class SunFormAccessTest(AquariaTestBase):
             "Abyss right area, bulb behind the rock in the whale room",
             "Octopus Cave, Dumbo Egg",
             "Beating Octopus Prime",
+            "Sunken City, bulb on top of the boss area",
+            "Beating the Golem",
+            "Sunken City cleared",
             "Final Boss area, bulb in the boss third form room",
             "Objective complete"
         ]
diff --git a/worlds/hk/Items.py b/worlds/hk/Items.py
index 0d4ab3d55f..8515465826 100644
--- a/worlds/hk/Items.py
+++ b/worlds/hk/Items.py
@@ -64,3 +64,4 @@ item_name_groups = ({
 })
 item_name_groups['Horizontal'] = item_name_groups['Cloak'] | item_name_groups['CDash']
 item_name_groups['Vertical'] = item_name_groups['Claw'] | {'Monarch_Wings'}
+item_name_groups['Skills'] |= item_name_groups['Vertical'] | item_name_groups['Horizontal']
diff --git a/worlds/messenger/options.py b/worlds/messenger/options.py
index 73adf4ebdf..1f76dba489 100644
--- a/worlds/messenger/options.py
+++ b/worlds/messenger/options.py
@@ -5,7 +5,7 @@ from schema import And, Optional, Or, Schema
 
 from Options import Accessibility, Choice, DeathLinkMixin, DefaultOnToggle, OptionDict, PerGameCommonOptions, \
     PlandoConnections, Range, StartInventoryPool, Toggle, Visibility
-from worlds.messenger.portals import CHECKPOINTS, PORTALS, SHOP_POINTS
+from .portals import CHECKPOINTS, PORTALS, SHOP_POINTS
 
 
 class MessengerAccessibility(Accessibility):
diff --git a/worlds/mlss/Rom.py b/worlds/mlss/Rom.py
index 08921500da..7cbbe88751 100644
--- a/worlds/mlss/Rom.py
+++ b/worlds/mlss/Rom.py
@@ -306,8 +306,7 @@ def write_tokens(world: "MLSSWorld", patch: MLSSProcedurePatch) -> None:
     if world.options.scale_stats:
         patch.write_token(APTokenTypes.WRITE, 0xD00002, bytes([0x1]))
 
-    if world.options.xp_multiplier:
-        patch.write_token(APTokenTypes.WRITE, 0xD00003, bytes([world.options.xp_multiplier.value]))
+    patch.write_token(APTokenTypes.WRITE, 0xD00003, bytes([world.options.xp_multiplier.value]))
 
     if world.options.tattle_hp:
         patch.write_token(APTokenTypes.WRITE, 0xD00000, bytes([0x1]))
diff --git a/worlds/musedash/__init__.py b/worlds/musedash/__init__.py
index a9eacbbcf8..ab3a4819fc 100644
--- a/worlds/musedash/__init__.py
+++ b/worlds/musedash/__init__.py
@@ -249,9 +249,7 @@ class MuseDashWorld(World):
 
     def create_regions(self) -> None:
         menu_region = Region("Menu", self.player, self.multiworld)
-        song_select_region = Region("Song Select", self.player, self.multiworld)
-        self.multiworld.regions += [menu_region, song_select_region]
-        menu_region.connect(song_select_region)
+        self.multiworld.regions += [menu_region]
 
         # Make a collection of all songs available for this rando.
         # 1. All starting songs
@@ -265,18 +263,16 @@ class MuseDashWorld(World):
         self.random.shuffle(included_song_copy)
         all_selected_locations.extend(included_song_copy)
 
-        # Make a region per song/album, then adds 1-2 item locations to them
+        # Adds 2 item locations per song/album to the menu region.
         for i in range(0, len(all_selected_locations)):
             name = all_selected_locations[i]
-            region = Region(name, self.player, self.multiworld)
-            self.multiworld.regions.append(region)
-            song_select_region.connect(region, name, lambda state, place=name: state.has(place, self.player))
+            loc1 = MuseDashLocation(self.player,  name + "-0", self.md_collection.song_locations[name + "-0"], menu_region)
+            loc1.access_rule = lambda state, place=name: state.has(place, self.player)
+            menu_region.locations.append(loc1)
 
-            # Muse Dash requires 2 locations per song to be *interesting*. Balanced out by filler.
-            region.add_locations({
-                    name + "-0": self.md_collection.song_locations[name + "-0"],
-                    name + "-1": self.md_collection.song_locations[name + "-1"]
-            }, MuseDashLocation)
+            loc2 = MuseDashLocation(self.player,  name + "-1", self.md_collection.song_locations[name + "-1"], menu_region)
+            loc2.access_rule = lambda state, place=name: state.has(place, self.player)
+            menu_region.locations.append(loc2)
 
     def set_rules(self) -> None:
         self.multiworld.completion_condition[self.player] = lambda state: \
diff --git a/worlds/sa2b/docs/setup_en.md b/worlds/sa2b/docs/setup_en.md
index 354ef4bbe9..f32001a678 100644
--- a/worlds/sa2b/docs/setup_en.md
+++ b/worlds/sa2b/docs/setup_en.md
@@ -48,7 +48,7 @@
 
 7. Install protontricks, on the Steam Deck this can be done via the Discover store, on other distros instructions vary, [see its github page](https://github.com/Matoking/protontricks).
 
-8. Download the [.NET 7 Desktop Runtime for x64 Windows](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-desktop-7.0.17-windows-x64-installer}. If this link does not work, the download can be found on [this page](https://dotnet.microsoft.com/en-us/download/dotnet/7.0).
+8. Download the [.NET 7 Desktop Runtime for x64 Windows](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-desktop-7.0.17-windows-x64-installer). If this link does not work, the download can be found on [this page](https://dotnet.microsoft.com/en-us/download/dotnet/7.0).
 
 9. Right click the .NET 7 Desktop Runtime exe, and assuming protontricks was installed correctly, the option to "Open with Protontricks Launcher" should be available. Click that, and in the popup window that opens, select SAModManager.exe. Follow the prompts after this to install the .NET 7 Desktop Runtime for SAModManager. Once it is done, you should be able to successfully launch SAModManager to steam.
 
diff --git a/worlds/sc2/Client.py b/worlds/sc2/Client.py
index ac9ccfffcd..e6696b782d 100644
--- a/worlds/sc2/Client.py
+++ b/worlds/sc2/Client.py
@@ -107,10 +107,10 @@ class ColouredMessage:
     def coloured(self, text: str, colour: str) -> 'ColouredMessage':
         add_json_text(self.parts, text, type="color", color=colour)
         return self
-    def location(self, location_id: int, player_id: int = 0) -> 'ColouredMessage':
+    def location(self, location_id: int, player_id: int) -> 'ColouredMessage':
         add_json_location(self.parts, location_id, player_id)
         return self
-    def item(self, item_id: int, player_id: int = 0, flags: int = 0) -> 'ColouredMessage':
+    def item(self, item_id: int, player_id: int, flags: int = 0) -> 'ColouredMessage':
         add_json_item(self.parts, item_id, player_id, flags)
         return self
     def player(self, player_id: int) -> 'ColouredMessage':
@@ -122,7 +122,6 @@ class ColouredMessage:
 
 class StarcraftClientProcessor(ClientCommandProcessor):
     ctx: SC2Context
-    echo_commands = True
 
     def formatted_print(self, text: str) -> None:
         """Prints with kivy formatting to the GUI, and also prints to command-line and to all logs"""
@@ -257,7 +256,7 @@ class StarcraftClientProcessor(ClientCommandProcessor):
                     for item in received_items_of_this_type:
                         print_faction_title()
                         has_printed_faction_title = True
-                        (ColouredMessage('* ').item(item.item, flags=item.flags)
+                        (ColouredMessage('* ').item(item.item, self.ctx.slot, flags=item.flags)
                             (" from ").location(item.location, self.ctx.slot)
                             (" by ").player(item.player)
                         ).send(self.ctx)
@@ -278,7 +277,7 @@ class StarcraftClientProcessor(ClientCommandProcessor):
                         received_items_of_this_type = items_received.get(child_item, [])
                         for item in received_items_of_this_type:
                             filter_match_count += len(received_items_of_this_type)
-                            (ColouredMessage('  * ').item(item.item, flags=item.flags)
+                            (ColouredMessage('  * ').item(item.item, self.ctx.slot, flags=item.flags)
                                 (" from ").location(item.location, self.ctx.slot)
                                 (" by ").player(item.player)
                             ).send(self.ctx)
diff --git a/worlds/shorthike/Rules.py b/worlds/shorthike/Rules.py
index 4a71ebd3c8..33741c6d80 100644
--- a/worlds/shorthike/Rules.py
+++ b/worlds/shorthike/Rules.py
@@ -1,5 +1,6 @@
 from worlds.generic.Rules import forbid_items_for_player, add_rule
-from worlds.shorthike.Options import Goal, GoldenFeatherProgression, MinShopCheckLogic, ShopCheckLogic
+from .Options import Goal, GoldenFeatherProgression, MinShopCheckLogic, ShopCheckLogic
+
 
 def create_rules(self, location_table):
     multiworld = self.multiworld
diff --git a/worlds/timespinner/Regions.py b/worlds/timespinner/Regions.py
index 4f53f75eff..757a41c388 100644
--- a/worlds/timespinner/Regions.py
+++ b/worlds/timespinner/Regions.py
@@ -70,7 +70,7 @@ def create_regions_and_locations(world: MultiWorld, player: int, precalculated_w
     logic = TimespinnerLogic(world, player, precalculated_weights)
 
     connect(world, player, 'Lake desolation', 'Lower lake desolation', lambda state: flooded.flood_lake_desolation or logic.has_timestop(state) or state.has('Talaria Attachment', player))
-    connect(world, player, 'Lake desolation', 'Upper lake desolation', lambda state: logic.has_fire(state) and state.can_reach('Upper Lake Serene', 'Region', player))
+    connect(world, player, 'Lake desolation', 'Upper lake desolation', lambda state: logic.has_fire(state) and state.can_reach('Upper Lake Serene', 'Region', player), "Upper Lake Serene")
     connect(world, player, 'Lake desolation', 'Skeleton Shaft', lambda state: flooded.flood_lake_desolation or logic.has_doublejump(state))
     connect(world, player, 'Lake desolation', 'Space time continuum', logic.has_teleport)
     connect(world, player, 'Upper lake desolation', 'Lake desolation')
@@ -80,7 +80,7 @@ def create_regions_and_locations(world: MultiWorld, player: int, precalculated_w
     connect(world, player, 'Eastern lake desolation', 'Space time continuum', logic.has_teleport)
     connect(world, player, 'Eastern lake desolation', 'Library')
     connect(world, player, 'Eastern lake desolation', 'Lower lake desolation')
-    connect(world, player, 'Eastern lake desolation', 'Upper lake desolation', lambda state: logic.has_fire(state) and state.can_reach('Upper Lake Serene', 'Region', player))
+    connect(world, player, 'Eastern lake desolation', 'Upper lake desolation', lambda state: logic.has_fire(state) and state.can_reach('Upper Lake Serene', 'Region', player), "Upper Lake Serene")
     connect(world, player, 'Library', 'Eastern lake desolation')
     connect(world, player, 'Library', 'Library top', lambda state: logic.has_doublejump(state) or state.has('Talaria Attachment', player)) 
     connect(world, player, 'Library', 'Varndagroth tower left', logic.has_keycard_D)
@@ -185,7 +185,7 @@ def create_regions_and_locations(world: MultiWorld, player: int, precalculated_w
     if is_option_enabled(world, player, "GyreArchives"):
         connect(world, player, 'The lab (upper)', 'Ravenlord\'s Lair', lambda state: state.has('Merchant Crow', player))
         connect(world, player, 'Ravenlord\'s Lair', 'The lab (upper)')
-        connect(world, player, 'Library top', 'Ifrit\'s Lair', lambda state: state.has('Kobo', player) and state.can_reach('Refugee Camp', 'Region', player))
+        connect(world, player, 'Library top', 'Ifrit\'s Lair', lambda state: state.has('Kobo', player) and state.can_reach('Refugee Camp', 'Region', player), "Refugee Camp")
         connect(world, player, 'Ifrit\'s Lair', 'Library top')
 
 
@@ -242,11 +242,19 @@ def connectStartingRegion(world: MultiWorld, player: int):
 
 
 def connect(world: MultiWorld, player: int, source: str, target: str, 
-            rule: Optional[Callable[[CollectionState], bool]] = None):
+            rule: Optional[Callable[[CollectionState], bool]] = None,
+            indirect: str = ""):
 
     sourceRegion = world.get_region(source, player)
     targetRegion = world.get_region(target, player)
-    sourceRegion.connect(targetRegion, rule=rule)
+    entrance = sourceRegion.connect(targetRegion, rule=rule)
+
+    if indirect:
+        indirectRegion = world.get_region(indirect, player)
+        if indirectRegion in world.indirect_connections:
+            world.indirect_connections[indirectRegion].add(entrance)
+        else:
+            world.indirect_connections[indirectRegion] = {entrance}
 
 
 def split_location_datas_per_region(locations: List[LocationData]) -> Dict[str, List[LocationData]]:
diff --git a/worlds/yugioh06/client_bh.py b/worlds/yugioh06/client_bh.py
index 910eba7c6a..ecbe48110a 100644
--- a/worlds/yugioh06/client_bh.py
+++ b/worlds/yugioh06/client_bh.py
@@ -5,7 +5,7 @@ from NetUtils import ClientStatus, NetworkItem
 
 import worlds._bizhawk as bizhawk
 from worlds._bizhawk.client import BizHawkClient
-from worlds.yugioh06 import item_to_index
+from . import item_to_index
 
 if TYPE_CHECKING:
     from worlds._bizhawk.context import BizHawkClientContext
diff --git a/worlds/yugioh06/opponents.py b/worlds/yugioh06/opponents.py
index 1746b56529..68d7c2880f 100644
--- a/worlds/yugioh06/opponents.py
+++ b/worlds/yugioh06/opponents.py
@@ -3,8 +3,8 @@ from typing import Dict, List, NamedTuple, Optional, Union
 from BaseClasses import MultiWorld
 from worlds.generic.Rules import CollectionRule
 
-from worlds.yugioh06 import item_to_index, tier_1_opponents, yugioh06_difficulty
-from worlds.yugioh06.locations import special
+from . import item_to_index, tier_1_opponents, yugioh06_difficulty
+from .locations import special
 
 
 class OpponentData(NamedTuple):