motumbo
A free party game — play it in your browser, no install. Physics sumo party game: deterministic C simulation compiled to WASM, serverless multiplayer over WebRTC lockstep. 20 arenas, map editor, bots.
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Best with a keyboard. Controls: Arrow keys · WASD · Space · Mouse · Tap
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Open the live demo Source on GitHubFrom the README
Physics sumo party game in the browser. Shove your rivals off a crumbling arena — last ball standing wins. 20 arenas, 4 game modes, a map editor, deterministic bots, and serverless 1v1 online multiplayer.
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The entire game simulation lives in one deterministic C file (sim/motumbo.c) compiled to WebAssembly, built on Box3D (Erin Catto's 3D physics engine). JavaScript only renders, plays audio, and moves bytes.
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