Half-Life 2

Half-Life 2 (PC, 2004) has an open-source reimplementation, nillerusr/srceng-android, and 3 other public projects, including an official source code release and a static recompilation.

Data checked 2026-10-12 · unbaked registry

xboxrecomp

Projects

srceng-android

ReimplementationReScript, Java230 starspushed 2023-05-08no license

Android launcher for source engine

development sporadic; status playable; A reverse-engineer port of the Nvidia Shield version of HL2.

hl2-recomp

Static recompsp00nznet/xboxrecomp (x86->C lifter, XBE parser, kernel HLE, D3D8->D3…3 starspushed 2026-09-08MIT license

Static recompilation of Half-Life 2 (Xbox, 2005) to native Windows via xboxrecomp

Boots to its own main menu (City 17 skyline); not playable; 49,498 functions disassembled; RTTI/datamaps cross-referenced to Source SDK 2013 (84% of classes)

source-sdk-2013general tool

Source releaseC++ (VPC; MSVC/GCC)10,060 starspushed 2026-10-10custom license

The 2013 edition of the Source SDK

Source SDK 2013 game code for HL2/Episodes/HL2DM (2013, updated 2025 with TF2); engine closed.

Half-Life 2

Source port

What you need

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

Same toolchain

GameMethodYearStarsLast push

PCCounter-StrikeDecompAI-assisted decomp+520002.8k2026-10-12 PS2Burnout 3: TakedownMatching decompStatic recomp+120041882026-10-09 XBOXDead or Alive Xtreme Beach VolleyballStatic recomp20031472026-10-12 XBOXMercenaries: Playground of DestructionStatic recomp20051062026-10-06 PS2SSX TrickyMatching decompStatic recomp+12001412026-10-11 PS2BlackMatching decompStatic recomp2006342026-10-12 PS2Spider-Man 2Static recomp2004322026-10-08 PS2Def Jam: Fight for NYMatching decompStatic recomp2004292026-10-12

More on PC

GameMethodYearStarsLast push

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

Found via osgameclones.com/, sp00nznet/xboxrecomp, recompiledgames.com/half-life-2-recompiled/

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