Co-op Anything

Point your coding agent at a single-player game and play it in co-op with friends

About

An agent playbook for turning single-player games into co-op

You tell your agent to read the repo and follow AGENTS.md for a given game. It takes one of two paths: finish an existing co-op mod that is buggy or abandoned (mine its bug reports, audit the code, fix it as a separate package), or build co-op from zero (reverse engineer the game and engine, hook in, show the second player, sync enemies, world and story). The Co-op Anything MCP lets any agent search the co-op directory, detect a game's engine from its install folder, read the playbook and skills, and validate contributions; it pairs with a reverse-engineering MCP such as REA for the binary work. Projects built with it so far include a released Deus Ex co-op and work on Fallout: New Vegas, Zelda: Ocarina of Time, Dungeon Keeper and S.T.A.L.K.E.R., plus community ports like Mega Man X. Only use it with games you own.

Features