Browse free open source C First Person Shooters and projects below. Use the toggles on the left to filter open source C First Person Shooters by OS, license, language, programming language, and project status.

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  • 1
    BZFlag - Multiplayer 3D Tank Game
    OpenSource OpenGL Multiplayer Multiplatform Battle Zone capture the Flag. 3D first person tank game. Download the latest version at https://www.bzflag.org/downloads/ Development has moved to Github: https://github.com/BZFlag-Dev/bzflag (The SourceForge binary releases for Windows and macOS are very outdated. Please download the latest version from our website.)
    Leader badge
    Downloads: 2,059 This Week
    Last Update:
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  • 2
    QuakeSpasm

    QuakeSpasm

    A modern, cross-platform Quake game engine based on FitzQuake.

    QuakeSpasm is a *Nix friendly Quake Engine based on the SDL port of the popular FitzQuake. It includes some new features, important fixes, and aims for portability and 64 bit correctness.
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    Downloads: 506 This Week
    Last Update:
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  • 3
    Hexen II: Hammer of Thyrion

    Hexen II: Hammer of Thyrion

    A cross-platform port of Hexen II game.

    Hammer of Thyrion (uHexen2) is a cross-platform port of Raven Software's Hexen II source. It is based on an older linux port, Anvil of Thyrion. HoT includes countless bug fixes, improved music, sound and video modes, opengl improvements, support for many operating systems and architectures, and documentation among many others.
    Leader badge
    Downloads: 304 This Week
    Last Update:
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  • 4
    OpenArena

    OpenArena

    Free and open source FPS based on Quake III Arena

    OpenArena aims to be a free, yet compatible clone of Quake III Arena. It also strives to add subtle enhancements such as new gametypes, playermodels and of course maps! Further improvements are incorporated by using the ioquake3 engine.
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    Downloads: 220 This Week
    Last Update:
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  • 5
    This is one of the most popular Doom source ports. It is available for DOS, Windows, Linux and Mac OS X, and should build on any POSIX platform which supports SDL. It enhances Doom with things like TCP/IP networking, OpenGL renderer, Heretic support and much more.
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    Downloads: 129 This Week
    Last Update:
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  • 6
    Nexuiz is a multiplayer first-person shooter. It is distributed under the GNU General Public License (GPLv2). Version 1.0 was released on May 31, 2005. The current version is, 2.5.2.
    Downloads: 109 This Week
    Last Update:
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  • 7
    AMX Mod X
    AMX Mod X is a Metamod plugin which allows you to write modifications for Half-Life with Small scripting language. It provides in-game administration tools, game statistics, server management and gameplay modificators. It is based on the original AMX Mod
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    Downloads: 104 This Week
    Last Update:
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  • 8
    PrBoom, the purest Doom-Port? Aims to be the most stable Doom port with the highest compatibility to the major Doom versions. Highres software and nice OpenGL rendering. Full Boom and most if not all MBF features.
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    Downloads: 126 This Week
    Last Update:
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  • 9
    Digital Paint: Paintball 2
    Paintball2 is a fast-paced first-person game with capture the flag, elimination, siege, and deathmatch (free-for-all) styles of gameplay. This project focuses on enhancing the Quake2-based engine it uses.
    Downloads: 68 This Week
    Last Update:
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  • 10
    Doom 64 EX is a faithful recreation of the original game using the Doom source code as the base with the benefit from newer control methods like mouse look, high resolutions and color depth.
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    Downloads: 90 This Week
    Last Update:
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  • 11
    Modified PrBoom port with uncapped framerate, variable gamespeed, re-record, walkcam, chasecam, full mouselook, fov and other features without loss of compatibility with original DOOM.
    Leader badge
    Downloads: 68 This Week
    Last Update:
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  • 12
    Metamod-P is enhanced version of Metamod. It has dynamic link-entities and automatic detection of Mod DLL and other improvement to allow it work with future Half-Life Engine updates and new Mods and updates. It also has performance optimizations.
    Downloads: 61 This Week
    Last Update:
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  • 13
    Doomsday Engine

    Doomsday Engine

    DOOM / Heretic / Hexen source port with enhanced graphics and UI

    A portable game engine for classic first person shooters such as DOOM, Heretic and Hexen. Lets you enjoy the original games using modern technology, including high-resolution OpenGL graphics, 3D models, and dynamic lighting effects.
    Downloads: 47 This Week
    Last Update:
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  • 14
    AssaultCube Reloaded

    AssaultCube Reloaded

    A fun realistic multiplayer free-and-open-source first-person-shooter!

    ACR is a fun realistic multiplayer free-and-open-source first-person-shooter! This project has moved to GitHub. A mirror of releases is here.
    Downloads: 26 This Week
    Last Update:
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  • 15
    QuakeForge
    QuakeForge is a set of 3D graphics game engines based on id Software's legendary Quake series of game engines. Our purpose? To improve the state of the game by improving the engines and making them accessible to as many people as we can.
    Downloads: 25 This Week
    Last Update:
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  • 16
    Team based Aliens vs Humans FPS with buildable structures.
    Downloads: 42 This Week
    Last Update:
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  • 17
    ezQuake
    ALL FILES FOUND HERE ARE _OLD_, PLEASE MOVE TO https://ezquake.github.io FOR THE LATEST VERSIONS Combining the features of all modern QuakeWorld® clients, ezQuake makes QuakeWorld® easier to start and play. The immortal first person shooter Quake® in the brand new skin with superb graphics and extremely fast gameplay. The project started in August 2004 as a derivate of the FuhQuake client by fuh which is a derivate of ZQuake QuakeWorld client by Tonik, one of the current ezQuake developers. Finally, ZQuake is a derivate of QuakeWorld client made by Id Software. This company has created the Quake game itself and later on released the source codes of game executables under GNU General Public License. Because id Software didn't release the whole game for free to the public you still need some of the original files from Quake to play QuakeWorld using our client.
    Downloads: 15 This Week
    Last Update:
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  • 18

    D2X-XL

    OpenGL port of the classic 6dof 3D shooter Descent

    D2X-XL is an OpenGL port of the classic 3D Shooter game Descent 2 for Win32, Linux and Mac OS X, containing many enhancements and bug fixes while preserving full backwards compatibility.
    Downloads: 10 This Week
    Last Update:
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  • 19
    ZDoom is an enhanced port of the official DOOM source code to Win32 and Linux; it adds new features not found in the version published by id Software. Supports Heretic, Hexen and partially Strife. Extra tools: ACC ZDBSP ZETH.
    Leader badge
    Downloads: 46 This Week
    Last Update:
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  • 20
    Unvanquished

    Unvanquished

    Open source FPS/RTS Game

    Unvanquished is a fast-paced, futuristic FPS with RTS elements, pitting technologically advanced humans against hordes of highly adaptable aliens. The player can choose from either team, providing a fresh gameplay experience on both sides of the conflict. The game is under highly active development with new releases frequently published.
    Downloads: 8 This Week
    Last Update:
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  • 21
    QuakeIIxp is a multi-platform (windows, linux and freeBSD (experemental)) graphics port of the game Quake II developed by Id Software. Completely updated rendering takes full advantage of the latest graphics cards to get the perfect picture, preserving the original style of the game.
    Downloads: 12 This Week
    Last Update:
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  • 22
    Smokin' Guns
    Smokin' Guns is a GPLv2 licensed first person Western style shooter based on the Quake 3 engine (Id Tech 3) developed by a loosely knit team of developers and artists. This project represents the game engine.
    Downloads: 7 This Week
    Last Update:
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  • 23
    Chocolate Doom

    Chocolate Doom

    Historically accurate Doom source port

    CHOCOLATE DOOM IS NO LONGER HOSTED ON SOURCEFORGE! Please download from the homepage:
    Downloads: 6 This Week
    Last Update:
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  • 24
    No Gravity is a fantastic and futuristic universe made of five intergalactic worlds. An arcade type game with great playability, where it is easy to plunge into space battles against spacefighters, space stations and more !
    Downloads: 11 This Week
    Last Update:
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  • 25
    HHexen
    [Hacked Hexen] based on K.Robillard's Linux Hexen engine, is finally being finished after Dan left it in limbo for a while. New stuff includes midi, screenshots, bug-fixes, transparent maps, and extensive C fixes allowing for OS and CPU portability.
    Downloads: 17 This Week
    Last Update:
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