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
Wazana Cosmos
Build up & protect your base in Cosmos! This game will be keeping you playing for hours.

Left click to select buildings and units
Right click to order movements or attacks
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