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Life & fun · October 8, 2021

WASM-4 is a virtual game console with a WebAssembly CPU

Build retro games using WebAssembly for a fantasy console

WASM-4 is a virtual game console with a WebAssembly CPU launched on October 8, 2021 with 9 votes, #1,332 of 2,933 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 5 years on.

Visit wasm4.org ↗Alternatives

What it does

Everything you need to build complete games without being overwhelming. Get creative within 160x160 pixels and 4 colors. Use any programming language, as long as it can compile to WebAssembly. AssemblyScript, C/C++, Rust, Go, and more. Besides great desktop/mobile web support, run your game natively (no webviews!) even on low-powered microcontrollers and obsolete hardware . Fast online multiplayer support with rollback netcode based on GGPO. WASM-4 is supported by a diverse and friendly community of creators who love buildingfrom wasm4.org

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