R.E.P.O. Lobby Filter

A BepInEx plugin for R.E.P.O. that automatically filters Russian and Belarusian lobbies from the server browser.

Features

• Automatic Cyrillic Detection - Blocks lobbies with Russian/Belarusian characters
• Keyword Filtering - Blocks lobbies containing RU, BY, RUS, RUSSIA, BELARUS, (RUS), (RU), (BY)
• Region Filtering - Blocks lobbies from Russia/Belarus based on Photon region data
• Persistent Blocklist - Auto-saves blocked lobby GUIDs to prevent rename evasion
• Minimal Logging - Clean console output showing blocked count and blocklist size
• Manual Blocking - Edit blocklist file to add/remove lobbies manually

Installation

1. Install BepInEx (if not already installed):

   • Download BepInEx 5.4.23 from https://github.com/BepInEx/BepInEx/releases
   • Extract to your R.E.P.O. game folder
   • Run the game once to generate BepInEx folders

2. Install the plugin:

   • Copy REPOLobbyFilter.dll to R.E.P.O\BepInEx\plugins\
   • Launch the game

3. Done! - The plugin starts filtering automatically

How It Works

The plugin intercepts the server list before it's displayed and removes lobbies that match any of these criteria:

1. GUID Blocklist - Lobby GUID is in the blocklist file (permanent block even if renamed)
2. Name Blocklist - Lobby name is in the blocklist file
3. Cyrillic Characters - Lobby name contains Russian/Belarusian alphabet (U+0400 to U+04FF)
4. Keywords - Lobby name contains: RU, BY, RUS, RUSSIA, BELARUS, (RUS), (RU), (BY)
5. Region Code - Photon region is RU, BY, Russia, or Belarus

When a lobby is blocked by criteria 3-5, its GUID is automatically saved to the blocklist for future filtering.

Configuration

The plugin creates a config file at: R.E.P.O\BepInEx\config\com.repolobbyfilter.repolobbyfilter.cfg

[Filter]
# Enable or disable filtering (default: true)
EnableFilter = true

Manual Blocking

You can manually add lobbies to the blocklist by editing: R.E.P.O\BepInEx\config\REPOLobbyFilter_Blocklist.txt

Each line can contain either:

• A lobby GUID (e.g., 550e8400-e29b-41d4-a716-446655440000)
• A lobby name (e.g., My Server Name)

GUID blocking is recommended as it prevents rename evasion. The plugin logs GUIDs when auto-blocking.

Console Output

Typical log messages:

[Info   :REPOLobbyFilter] Loaded 93 blocked lobbies from file
[Info   :REPOLobbyFilter] Lobby filter ready! Blocked lobbies will be auto-saved.
[Info   :REPOLobbyFilter] Blocked 23/65 lobbies (Total in blocklist: 93)
[Info   :REPOLobbyFilter] ✅ Auto-saved to blocklist: "Русский Сервер" (GUID: 550e8400-e29b-41d4-a716-446655440000)

Building from Source

1. Install .NET SDK 6.0 or later
2. Clone/download this repository
3. Edit REPOLobbyFilter.csproj and update the REPOPath property to your game folder
4. Run: dotnet build
5. Copy bin\Debug\net46\REPOLobbyFilter.dll to BepInEx\plugins\

Troubleshooting

Plugin not loading:

• Check BepInEx\LogOutput.log for errors
• Ensure BepInEx is properly installed
• Verify .dll is in the plugins folder

Still seeing Russian lobbies:

• Check if lobby name uses special characters or formats
• Report the lobby name so keyword detection can be improved
• Manually add the lobby to the blocklist file

Too many lobbies blocked:

• Set EnableFilter = false in the config file
• Or edit the blocklist file to remove entries

Technical Details

• Framework: BepInEx 5.4.23.4, .NET Framework 4.6
• Patching: Harmony 2.x Prefix patch on MenuPageServerList.OnRoomListUpdate
• Detection: Unicode range check, keyword matching, Photon CustomProperties
• Storage: Plain text file with HashSet for fast lookup

License

MIT License - Free to use and modify