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PCPC · 2001 · FPS

Return to Castle Wolfenstein

Return to Castle Wolfenstein (PC, 2001) has an official source code release, iortcw/iortcw, and 6 other public projects, including an open-source reimplementation and a source port.

Data checked 2026-10-12 · unbaked registry

Projects

iortcw
Source release · Source portC (ioq3 merge)758 starspushed 2024-06-27GPL-3.0 licenserelease 1.51c

Merge of ioquake3 features and fixes into RTCW code bases

Mature

RTCW-SP
Source releaseC (id Tech 3)629 starspushed 2021-03-18GPL-3.0 license

Return to Castle Wolfenstein Single Player GPL Source Release

Wikipedia: open-source code, proprietary assets; source released 2010 by/for Gray Matter Studios/Nerve Software. The source code for Return to Castle Wolfenstein and Enemy Territory was released under the GNU General Public License (GPL) o…

RTCW-MP
Source releaseC378 starspushed 2012-01-31GPL-3.0 license

Return to Castle Wolfenstein Multiplayer GPL Source Release

Official source release (companion to main entry).

vitaRTCW
ReimplementationC59 starspushed 2026-05-17GPL-3.0 license

Return to Castle Wolfenstein port for PSVITA.

development sporadic; status playable; Return to Castle Wolfenstein port for PSVITA.

rtcw.pieter.com (iortcw + Wwasm)
Source portiortcw compiled to WebAssembly via GMH-Code/Wwasm (GPL-3.0); mp_beach…14 starspushed 2025-12-30GPL-3.0 license

Play the Return to Castle Wolfenstein first-person shooter engine in your browser!

Live.

rtcw.pieter.com
Source port
Return to Castle Wolfenstein
Source port

What you need

You need your own copy of the game: these projects ship code only.

More on PC

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PCMindustrySource releaseAgent environment201929k2026-10-11PCosu!Source releaseReadable bytecode+1200719k2026-10-12PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12PCDune 2000Reimplementation199818k2026-10-11PCAge of Empires IIReimplementation199914k2026-10-03PCCataclysm: Dark Days AheadSource release201313k2026-10-12PCCivilization VSource releaseReimplementation201011k2026-10-12

Found via en.wikipedia.org/wiki/List_of_commercial_video_g, shacknews.com/article/65118/source-code-released, planetquake.gamespy.com/fullstory.php?id=163173, osgameclones.com/, inxanitylabs.com/games/rtcw

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.