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
FlyOrDie
To eat Or be eaten? That is the question.
You start off as a fly and as you eat, you evolve into different animals. Move using WASD, and eat things that are in green borders. Avoid things that are in red borders - they eat you! Evolve your way into becoming the greatest evolution in this game possible and gain special skills. Oh yeah, don't forget to drink water!

Are you going to be the predator or fall prey???
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