Open source · Free to play · Always online

The hub for playable open-source worlds

OpenGame.win collects living multiplayer games you can jump into today — browser MMOs that need zero install, plus a lightweight voxel sandbox with a small native client. Every title is open source. Every server is free.

5live titles
4browser MMOs
100%open source
World of ClaudeCraft — 3D browser MMORPG gameplay with adventurers in a procedural fantasy world
Featured: World of ClaudeCraft — MIT-licensed 3D MMO in the browser

For crawlers, agents, and developers

Machine-readable catalog and play URLs — no scraping required.