Crawlspace 2 Multiplayer

Online co-op for Crawlspace 2. Play through the game with friends using Steam networking. Supports up to 10 players.

Features

• World-space VR multiplayer panel (host, join, invite, lobby codes)
• Proximity voice chat (Steam Voice)
• Real-time player sync (head, hands, body)
• Puzzle sync with per-player batteries
• Monster sync (Henry, Harold, Clown, Paintings)
• Ghost spectator mode on death
• Minimap indicators for all players
• Night progression saves for everyone
• Host migration on disconnect

How to Play

1. Install BepInEx 5
2. Drop mod files into the correct folders
3. Launch through Steam
4. Complete Night 0 (tutorial) solo first
5. Host a game or join a friend from the VR panel

All players need the same mod version.

Custom game modes

Crawlspace2MP exposes a game mode API for BepInEx add-ons. Modes register in code and the host selects them from the session rules panel. Each player needs a compatible mode add-on installed. See the Custom game modes section in the project README for requirements, callbacks, and a code example.

Voice Chat

Steam Voice with proximity-based 3D audio. Toggle from the multiplayer panel.

Bug Reports

Enable VerboseLogging in BepInEx/config/com.crawlspace2.multiplayer.cfg, reproduce the issue, and share BepInEx/LogOutput.log.

Discord: https://discord.com/invite/BDZ6NjegeR

Changelog

[2.0.0]

Multiplayer and reliability

• Expand lobby support to 10 players, with host migration, safer packet validation, version checks, and more reliable player and monster state synchronization.
• Improve monster, painting, battery, vent, and voice cleanup when players disconnect, die, or change scenes.
• Fix multiplayer ghost and spectator behavior, including keeping a surviving host from being stranded as a spectator after the rest of the party dies.
• Add a public API for custom multiplayer game modes, including host-selected modes and synchronized mode messages.

Lobby and session options

• Add adjustable lobby capacity, friends-only or invite-only access, and a door-based ready check.
• Add session settings for team exit charging, individual Henrys, Gauntlet rules, and ghost voice access.
• In team exit mode, each living player charges their share; shares are recalculated when someone dies or leaves.
• Add Gauntlet with selectable wipe rules. Gauntlet progress is session-only, preserves campaign saves, and returns the group to Home after a wipe.
• Synchronize night starts and exits for everyone, including the game's fade and door sound.

Voice chat

• Add microphone volume controls up to 200% and received voice gain controls up to +12 dB, with soft peak limiting.
• Add a host-controlled ghost voice option: everyone can hear ghosts, or only ghosts can hear them.
• Improve voice cleanup and reduce repetitive audio and font warnings in the log.

Entities, gameplay, and progression

• Make ghost visibility follow what living players can see, including entities and changed paintings.
• Add individually owned Henrys that are visible to everyone and can attack living players; improve their movement and effects synchronization.
• Improve shared death jumpscares under the Gauntlet rule where one death wipes the group.
• Fix low-power dark ambience continuing for ghosts and limit Smile's spawn distance.
• Improve campaign progression, puzzle, battery, exit-door, and spectator handling across multiplayer sessions.

Interface and maintenance

• Redesign the multiplayer interface
• Add player-count, privacy, and ready status to the lobby, and improve the ready-up indicator and door interaction.
• Improve microphone device-name display, friend list layout, button hover states, panel transparency, and version label placement.
• Make routine diagnostics opt-in, reduce repeated log noise, improve tracking-reference recovery, and reorganize synchronization and patch code.