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    • VR mod for Half-Life
      C++
      23000Updated Oct 20, 2022Oct 20, 2022
    • Half-Life-RTX-clone

      Public archive
      Unofficial mirror of Half-Life RTX repository. Official repo: https://git.mentality.rip/Half-Life-RTX/xash3d-fwgs
      C
      0100Updated Oct 3, 2022Oct 3, 2022
    • Half-Life: Blue Shift SDK based on Half-Life Updated, with bug fixes. See here for more information: https://github.com/SamVanheer/halflife-updated/wiki
      C++
      Other
      13000Updated Sep 26, 2022Sep 26, 2022
    • OGS

      Public
      An open-source GoldSrc engine clone (Clean authentic reimplementation without using reverse-engineered code)
      C
      GNU General Public License v3.0
      12100Updated Sep 17, 2022Sep 17, 2022
    • ingram chillin' mod (unofficial mirror)
      C++
      0000Updated Aug 30, 2022Aug 30, 2022
    • List of source code repositories, related to Half-Life and GoldSrc
      HTML
      21430Updated Aug 30, 2022Aug 30, 2022
    • freehl

      Public
      Clean-room reimplementation of Half-Life: Deathmatch and Half-Life (Experimental) in QuakeC.
      C
      ISC License
      12000Updated Aug 30, 2022Aug 30, 2022
    • Unofficial mirror of afterburner-game repository. Official repo: https://github.com/noodlecollie/afterburner-game
      HTML
      0100Updated Aug 30, 2022Aug 30, 2022
    • freesci

      Public
      Clean-room reimplementation of Scientist Hunt in QuakeC.
      C
      ISC License
      2000Updated Aug 26, 2022Aug 26, 2022
    • Clean-room reimplementation of Poke646 in QuakeC.
      C
      ISC License
      2000Updated Aug 23, 2022Aug 23, 2022
    • Clean-room reimplementation of They Hunger in QuakeC.
      C
      ISC License
      3000Updated Aug 23, 2022Aug 23, 2022
    • Clean-room reimplementation of Gunman Chronicles in QuakeC.
      C
      ISC License
      3000Updated Aug 23, 2022Aug 23, 2022
    • freecs

      Public
      Clean-room Counter-Strike 1.5 in QuakeC, using Nuclide SDK. Previously known as OpenCS! (2016)
      C
      ISC License
      17000Updated May 11, 2022May 11, 2022
    • Clean-room reimplementation of Opposing Force in QuakeC.
      C
      ISC License
      3000Updated May 11, 2022May 11, 2022
    • freetfc

      Public
      Clean-room reimplementation of Team Fortress Classic in QuakeC.
      C
      ISC License
      5000Updated May 11, 2022May 11, 2022
    • bspsrc

      Public
      A Source engine map decompiler
      Java
      Other
      89100Updated Feb 6, 2022Feb 6, 2022
    • VTFLib

      Public
      VTFLib is a LGPL open source programming library that provides a C and C++ API for reading and writing Valve VTF and VMT format image files.
      C++
      GNU Lesser General Public License v2.1
      53000Updated Feb 6, 2022Feb 6, 2022
    • sandbot

      Public
      GoldSource engine multiplayer bot
      C++
      Other
      9000Updated Feb 6, 2022Feb 6, 2022
    • CSMoE

      Public
      Counter-Strike mod based on Xash3D for Win32/UWP/macOS/iOS/Android/Linux
      C++
      GNU General Public License v3.0
      45000Updated Feb 6, 2022Feb 6, 2022
    • 🔨 Reverse-engineered gamedll (CS 1.6 / CZero)
      C++
      GNU General Public License v3.0
      202100Updated Feb 6, 2022Feb 6, 2022
    • rehlds

      Public
      Reverse-engineered HLDS
      C++
      GNU General Public License v3.0
      173000Updated Feb 6, 2022Feb 6, 2022
    • Condition Zero Deleted Scenes SDK
      C++
      Other
      4000Updated Feb 6, 2022Feb 6, 2022
    • Half-Life SDK with Opposing Force code
      C++
      Other
      28000Updated Feb 6, 2022Feb 6, 2022
    • Team Fortress 1.5 client.
      C++
      Other
      16000Updated Feb 6, 2022Feb 6, 2022
    • OpenAG

      Public
      An open-source reimplementation of Adrenaline Gamer's client library.
      C++
      Other
      40000Updated Feb 6, 2022Feb 6, 2022
    • Source code for the Half-Life 1 modification: Half-Rats: Parasomnia.
      C++
      Other
      2000Updated Feb 6, 2022Feb 6, 2022
    • HalfPayne

      Public
      C++
      Other
      4000Updated Feb 6, 2022Feb 6, 2022
    • Xash3D [build 4344] Converted to Visual Studio 2019 with other fixes and enhancements.
      C
      7000Updated Feb 6, 2022Feb 6, 2022
    • Xash3D FWGS engine. Rebooted fork since big Xash3D 0.99(1.0 is not yet) update.
      C
      246000Updated Feb 6, 2022Feb 6, 2022
    • Fork of patched Half-Life SDK 2.3 from original Xash3D engine sources
      C++
      Other
      127000Updated Feb 6, 2022Feb 6, 2022