Wwasm
A browser port of Return to Castle Wolfenstein
Compare all 2 ports of Return to Castle Wolfenstein- Works on mobile
- Gamepad support
An unofficial WebAssembly port of the Return to Castle Wolfenstein engine that plays in your web browser.
Play opens wwasm.m-h.org.uk in a new tab. Link checked 4 Nov 2026.
- Developer
- GMH-Code
- Tech
- WebAssembly
- Added
- 3 Nov 2026
Wwasm is an unofficial WebAssembly port of the Return to Castle Wolfenstein first-person shooter engine, allowing you to play the game directly in your web browser. The port automatically downloads and plays the official demo version out of the box, and also supports running the full game if you supply the necessary data files.
What you need
The demo loads on its own. Files from your own copy unlock the full game.
Good to know
- Touchscreen-only controls are available for mobile devices.
- Gamepads and local saving are fully supported.
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