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

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-Rocco, simmer.io founder
Hell Force
Space shooter created during the GameDev.tv 2D course.

Move: WSAD
Shoot: Space

Unique features:
• Random wave mode
• Special boss at wave 17 (random mode off)
• Health bars
• Wave counter
• Enemies ramp up slightly in fire rate the longer you play in random wave mode (or after you beat the boss).
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