Welcome to SIMMER 2.0!

We just rewrote the entire site and relaunched on Feb 15, 2025.

Need the old site? https://legacy.simmer.io

Need help? Got feedback or found a bug? support@simmer.io, discord

-Rocco, simmer.io founder
Sumo-io
Ever wonder what's it like to be a sumo wrestler? Now you can become one here ---that is if you got the discipline, honor, and tactics! Overtake your opponent & push them off the board and into the sea. What's even better is that you can eat sushi power-ups to grow in size!

Use the WASD or arrow pad to move around the board.

Prove to the world that you got what it takes to be the ultimate number one yokozuna (Japanese for highest ranked - grand champ)!
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