A terminal UI engine for Go, in your browser

Zero heap allocations on the render path, a built-in 3D rasteriser, charts and an accessibility tree. This page runs the same engine, compiled with GOOS=js GOARCH=wasm and drawn by xterm.js.

xterm.js · truecolor

Run Limoni in this tab

Downloads about 1.5 MB (a 6 MB WebAssembly module, compressed). Nothing is installed, nothing leaves your browser.

Ready — press Run to load the engine
1–5 or click a tab Tab next scene ↑↓PgUpPgDn scroll Space count mouse wheel scrolls

Games built with Limoni

Lemon Snake: a green snake, a glowing lemon and a purple monster

🐍 Lemon Snake

Eat lemons; every five, a monster comes. Spit their seeds at it. Five themes, a world leaderboard.

Play →
Lemon Drop: falling blocks crumbling into coloured sand over a faint lemon

🧱 Lemon Drop

Falling blocks that crumble into sand. A run of one colour from wall to wall clears.

Play →
Castle Lemonstein: the moonlit castle with gold lettering

🏰 Castle Lemonstein

A first-person raycaster: squirt the rats, find ten lemons, face Ratatui in the keep.

Play →
Limoni's charts demo: line, bar and pie charts in the terminal

The playground

The engine itself: widgets, charts, a 3D scene and forms, in one tabbed demo.

Open →