Play Return to Castle Wolfenstein in your browser

2 ports of Return to Castle Wolfenstein in the directory, side by side.

Port	Your files	Phone	Gamepad	Built with
rtcw.pieter.com	No	Yes	Yes	Source port (iortcw + Wwasm), WebAssembly
Wwasm	No	Yes	Yes	WebAssembly

The ports

rtcw.pieter.com
By Pieter Levels
Return to Castle Wolfenstein multiplayer on a live server with bots, built from iortcw and Wwasm. About 375 MB of game data downloads once and stays cached; touch and gamepad supported.
Link checked 4 Nov 2026.
Play Details
Wwasm
By GMH-Code
An unofficial WebAssembly port of the Return to Castle Wolfenstein engine that plays in your web browser.
Link checked 4 Nov 2026.
Play Details