MS-DOSUnofficialPlay
Games Shooter Return to Castle Wolfenstein
Image: rtcw.pieter.com
Shooter · 2001 · Wolfenstein
Return to Castle Wolfenstein
iortcw source port to WebAssembly.
PCPlay nowLink up · checked 2026-10-15
Opens rtcw.pieter.com
About the game
Return to Castle Wolfenstein sends B.J. Blazkowicz into Nazi occult experiments, and its class-based team multiplayer became a classic of its own. This is the iortcw source port compiled to WebAssembly, free with no install.
- Released
- 2001
- Developer
- Gray Matter Interactive (multiplayer by Nerve Software)
- Publisher
- Activision
- Original platforms
- Windows, later Mac, Linux, Xbox, PS2
- Genre
- Shooter
- Series
- Wolfenstein
About this port
- Access
- Play now
- Play link
- rtcw.pieter.com
- Port type
- Source port (iortcw) to WebAssembly
- Built on
- iortcw, the GPL source port of the game based on ioquake3, compiled with emscripten
- Game files
- Loads in the tab, nothing to supply
- Runs on
- Web browser
- Multiplayer
- Yes, dedicated server (iowolfded) on mp_beach
- Licence
- iortcw is GPL; the game data is not
- Port announced
- June 11, 2026 (the author's write-up)
