This browser can't run realtime-fluid

The simulation runs entirely on the GPU with compute shaders, which need WebGPU. Your browser doesn't expose it.

Chrome 113+ or Edge 113+ on desktop work today; Safari 18+ and Firefox 141+ also ship WebGPU. If you're already on one of those, WebGPU may be disabled by a flag or your GPU may be blocklisted — check chrome://gpu.

There is also a native build, which does not need a browser at all — download it for macOS or Windows. Those are unsigned builds, so the first launch needs one confirmation: on macOS, System Settings → Privacy & Security → Open Anyway; on Windows, More info → Run anyway.