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Show HN: Q3Edit – Edit and play Quake 3 maps in the browser

Quake III Arena map editor

Open, edit, and save real .map files — brushes, patches, entities, and terrain in a TypeScript + WebGL2 editor, with BSP compilation by id Software's original q3map compiled to WebAssembly. One click launches your compiled map in browser-native ioquake3.

Launch Q3Edit No game files needed — ships with OpenArena assets. Requires WebGL2.

  • 01 Radiant-style four-view UI
  • 02 Brushes, patches, CSG, terrain
  • 03 q3map + ioquake3 in WASM

Q3Edit showing its four map-editing viewports, toolbars, object list, entity controls, and texture browser

Real screenshot — the editor running in a browser tab