AI product Open source

Co-op Anything

Co-op Anything is an open-source MCP server and playbook for directing AI coding agents to add cooperative multiplayer to single-player PC games. The MCP server searches a directory of more than 230 co-op mods, detects a game's engine from its installation folder, provides research and reverse-engineering guidance, and validates contributions. An agent either revives an existing mod by auditing and fixing its code or builds co-op from scratch by hooking into the game, synchronizing players, enemies, worlds, story, level changes, and saves. Builds are tested with bots driving real game clients, then packaged for installation and Steam-relay play without port forwarding. The repository includes agent skills, engine-specific guidance, networking and split-screen playbooks, automated QA procedures, game-specific projects, and contribution rules. It is licensed under the MIT License.

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What Co-op Anything is used for

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  • Gives AI coding agents a playbook for adding co-op multiplayer to single-player PC games. An MCP server works out a game's engine from its install folder and checks a directory of over 230 co-op mods, then the agent either finishes an existing mod or reverse engineers the game; bots test every build with real clients over a Steam relay so friends can join with no port forwarding.

Videos mentioning Co-op Anything

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