It's written in Rust and runs on WebGPU (wasm with threads). I made it as a native mac app but have now ported it to wasm.
Disclaimer: The app was fully vibe-coded over a course of around 80 days using Claude Code and Codex.
Web app: play.lowpolyearth.online
Press esc for controls.
Home page with more screenshots: lowpolyearth.online