coop-anything
Coop-anything is a set of playbooks and an MCP server that let an AI coding agent add co-op play to single-player games for friends.
What it is good for
- Adding online or splitscreen co-op to a single-player game
- Reverse engineering a game so friends can join over Steam
- Reviving a stalled co-op mod for a PC game
- Testing multiplayer sync with bots before sharing a mod
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free and open source
- Type
- List or tutorial
- Tasks
- Works with
- Claude Code, Codex, Gemini CLI, Cursor, OpenCode, Steam
Momentum
- Rank this week
- Not ranked (last #49, week 43, 2026)
- Best rank
- #49 week 43, 2026
- GitHub stars
- 1,795
GitHub numbers as of Nov 2, 2026. Updated weekly.
Ranking history
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is coop-anything free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use coop-anything?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does coop-anything work with?
- According to its own documentation, it works with Claude Code, Codex, Gemini CLI, Cursor, OpenCode, and Steam.
- What is coop-anything good for?
- Adding online or splitscreen co-op to a single-player game, reverse engineering a game so friends can join over Steam, reviving a stalled co-op mod for a PC game, and testing multiplayer sync with bots before sharing a mod.
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