Open Source C Game Engines
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C Game Engines
View 35 business solutionsBrowse free open source C Game Engines and projects below. Use the toggles on the left to filter open source C Game Engines by OS, license, language, programming language, and project status.
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Xash3D FWGS Engine
Xash3D FWGS engine
Xash3D FWGS is an open-source fork and extension of the original GoldSrc-based engine (from the classic era of first-person shooters), aimed at providing compatibility with the original engine (e.g. games built on it) while extending and modernizing its capabilities. The engine supports multiple rendering backends (OpenGL, GLES, software fallback), modern platforms (desktop OSes, mobile, etc.), and updated features such as better multiplayer, voice chat, IPv6 support, improved virtual filesystem, and support for modern asset formats. For modders or fans of classic games, Xash3D FWGS offers a way to play or build games using the familiar GoldSrc workflow but with updated portability and features. Legacy mods and maps for supported games can often be used unchanged (or with minimal modifications), preserving the classic experience. At the same time, the engine’s enhancements — modern input support (gamepad, touch), modern OS compatibility, cross-platform builds. -
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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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Aleph One is the open source continuation of Bungie's Marathon 2 FPS game engine. Aleph One plays Marathon, Marathon 2, Marathon Infinity, and 3rd-party content on a wide array of platforms, with (optional) OpenGL rendering, Internet play, Lua scripting, and more.
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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. -
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ioquake3
The ioquake3 community effort to continue supporting/developing id's
ioquake3 is a free and open source first-person shooter engine derived from the Quake 3: Arena and Quake 3: Team Arena source code, maintained as a modern baseline engine for new games and classic mods. It is designed to let players run Quake 3, its expansion Team Arena, and community mods on contemporary systems while also serving as a solid base for new projects. The engine modernizes the original codebase with a CMake build system, an SDL2 backend for cross-platform windowing and input, and OpenAL sound for better audio quality and multi-speaker setups. It adds numerous quality-of-life improvements such as VoIP support, AVI demo capture, improved console completion and history, and optional Ogg Vorbis support. ioquake3 also improves portability and maintainability by supporting x86_64 on Linux, MinGW builds on Windows, and various other operating systems, and even provides web support via Emscripten. -
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Crown Engine
The flexible game engine
Crown is a general-purpose and data-driven game engine, written in orthodox C++ with a minimalistic and data-oriented design philosophy in mind. Every aspect of the game is controlled through text configuration files. Before shipping, configuration files are compiled to efficient platform-specific binary blobs. Data in memory is organized to achieve the maximum performance possible on every platform. Every game asset is hot-reloadable, code included. Evaluate modifications and adjustments on-the-fly without having to reboot the game every time. Runs and looks equally well both on Linux and on Windows. Designed to be as fail-safe as possible to never lose your work if crashes should occur. Engine plus tools amounts to less than 50K LOC. Written in simple 'C-style' C++. It is easy for anyone to understand and make modifications. All the code is released under the very permissive MIT license and can be downloaded via GitHub by anyone. -
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F·W·K
3D game engine/framework in C, with Luajit and Python bindings now
3D game framework in C, with Luajit and Python bindings now. -
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Permafrost Engine
An OpenGL RTS game engine written in C
Permafrost Engine is an OpenGL 3.3 real-time strategy (RTS) game engine written in C, designed to capture the feel of classic RTS titles while incorporating modern rendering and AI techniques. It uses a programmable pipeline with features like skeletal animation with GPU skinning, Phong lighting, bump mapping, terrain texture splatting, water rendering with reflection and refraction, and skyboxes. The engine is tailored specifically for large-scale RTS gameplay, supporting huge maps, efficient batched rendering, hierarchical flow-field pathfinding, formation movement, boids-style steering behaviors, and GPU-accelerated crowd simulation. It integrates tightly with Python 2.7 for scripting, exposing engine internals to Python and even allowing serialization and restoration of the entire Python interpreter state for robust save/load systems. -
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raylib-go
Go bindings for raylib, a simple and easy-to-use library
raylib-go is a Go (Golang) binding/wrapper around raylib, the light-weight C library for video game and multimedia programming. It allows Go developers to build 2D (and some simple 3D) games, graphical applications, or multimedia tools using a familiar and simple API, while leveraging Go’s language ergonomics, concurrency model, and ecosystem. With raylib-go, developers can draw graphics, handle input, play sound, manage textures, and manage game loops directly in Go — without needing to write or interface with C manually. This makes it a good choice for those who prefer Go over C/C++, but still want a simple, straightforward engine for fast prototyping or small-to-medium games. Because raylib is known for simplicity and ease of use, raylib-go carries that over to the Go ecosystem: you can get up and running quickly, which is ideal for hobbyist developers, game jams, prototypes, or small indie games. It bridges the gap between performance and convenience. -
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Haxima is an Ultima-like game engine (2D tile graphics) with combat, magic, NPC AI, an embedded scripting language, and in-game editing.
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Urho3D
Cross-platform 2D and 3D game engine
!!! The project repositories have been migrated to https://github.com/urho3d/Urho3D !!! -
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Mojoc
A cross-platform, open-source, pure C game engine for mobile game
Mojoc is an open-source, cross-platform, pure C game engine. It is based on OpenGLES3 and written in C99. It currently works on IOS and Android, but can easily be extended to other platforms, and will support more platforms in the future. In platform-independent code, Mojoc uses only the standard C library, no dependence on third-party libraries. Mojoc uses an extremely lightweight OOC (Object Oriented C) programming model. Mojoc application architecture is based on components, state-machines and is message-driven. Mojoc has been used for a cross-platform Android and IOS game. The samples will show all aspects of the Mojoc features. Each platform will provide native building project for native platform editor. For example Android provides AndroidStudio project, IOS provides XCode project. -
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Torque2D
A completely free, open-source, 2D game engine
Torque2D is a free and open-source game engine focused on 2D development, built on proven Torque technology and provided under the MIT license. It delivers a flexible and high-performance C++ framework that supports cross-platform development for Windows, macOS, Linux, iOS, Android, and the web from a single codebase, allowing developers to target a broad range of devices with minimal changes. The engine includes essential components such as a batched OpenGL renderer, Box2D physics integration, OpenAL audio support, automated asset management, and sprite and skeletal animation systems that simplify bringing characters and environments to life. With a modular project structure and support for object persistence using TAML, developers can build complex games with reusable systems and clear project organization. Torque2D also includes its own scripting language, enabling rapid iteration and gameplay scripting without deep engine modification. -
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qengine
Retro game engine for creating games like it's 1997
qengine is a cross-platform retro game engine. It is aimed at nostalgic game developers that miss simple times and enjoy creating games like it's 1997. The software renderer provides the aesthetic that we all love and the engine limitations exist to make your creativity shine. The engine is a fork of the Quake II codebase that focuses on serving as a base for standalone games. Unlike other ports, it does not aim at being compatible with mods or the base Quake II game. In fact, many features were removed to reduce the complexity of the codebase and make the process of creating new games on top of the engine easier and faster. Removal of overly specific gameplay code, such as enemies and weapons. Merge of modules into a single package. No more DLLs, just a single executable for client and another for server. qengine stands on the shoulders of giants from the Quake II community. The code is built upon Yamagi Quake II, which itself contains code from other amazing projects. -
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OpenTomb
Game engine for playing tomb raider 1 - 5 levels.
PLEASE NOTE: Project development moved to Github! https://github.com/opentomb Here you can find ONLY nightly builds for Windows. OpenTomb is an engine that can play classic Tomb Raider 1 - 5 levels and custom TRLE levels. It is developed for fans and fun. Some code was taken from OpenRaider project and Quake Tenebrae project. Resource loading routines are taken from http://icculus.org/vt/vt/ project. It is developing in netbeans 7 + GCC TDM 4.9.2 Used libraries: SDL2, SDLimage with jpeg and png libs, vorbis (ogg support), OpenGL, OpenAL, freetype 2, LUA, BULLET. Youtube engine work example: http://www.youtube.com/watch?v=Jf3JGm67oS0 I need some help in game behavior algorithms, level parsing, e.t.c. Needed for work: 1) Original Tomb Raider levels 2) Font .ttf 3) Config files (config.lua and autoexec.lua) -
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OpenTitus is a rewrite of the game engine used in the old DOS-based games Titus the Fox and Moktar (the French version). This project parses the data directly from the original game data files. The project is based on SDL and programmed in C. A wiki is available at http://opentitus.wikia.com/wiki/OpenTitus_Wiki If you do not own the original game already, you can purchase it at https://www.gog.com/game/titus_the_fox_to_marrakech_and_back
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Orx: Data-Driven Game Engine
Orx: Data-Driven Game Engine
Orx is a portable, lightweight, plugin-based, data-driven and extremely easy to use 2D-oriented game engine. As orx is data driven, it allows users to create games with a small number of lines of code and reduces drastically the development time. -
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Quantum Game Engine
A DirectX based graphics/physics engine
As of now, an independently developed graphics/physics engine for use with DirectX9/DirectX11 and C++. I'm only working on this during my free time, so it will not be updated too often unless I have something major to add to it. Outside insight would be appreciated. -
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OpenMoHAA is a game engine that is compatible with Medal of Honor: Allied Assault media and network protocol, based on the ioquake3 project.
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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.
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21
NakedTriad
An authentic Rise of The Triad Dark War source port
Naked Triad aims to be as close to the original Rise of The Triad: Dark War as possible. NakedTriad supports both GNU/Linux and Windows Operating Systems. For those wanting an experience close to how the original was, then NakedTriad is the most faithful source port on the internet (that works) and is fully 64bit clean. Enjoy. -
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Project is to maintain the open source tree for the Azusa Derived Distribution Edition of the SIO2 SDK v1.4 Game Engine Free Ed., previously distributed by sio2interactive.com in the book by Tony Mullen, "3D for iPhone Apps with Blender and SIO2."
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CorEngine is a work in progress, OpenGL graphics powered 3D game engine designed to help independent game developers with quick prototyping and game/virtual environment creation. The engine supports a standard set of features, like skeletal animation, post processing, Lua/C programming, physics powered by Bullet Physics, GUI and 2D/3D Audio.
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24
olivechess
a UCI chess engine
OliveChess is a simple chess engine compatible with modern chess interfaces such as ChessBase products, Arena and XBoard/Winboard. The engine supports UCI and XBoard protocols. Note: in order to use it as an xboard engine you may need Polyglot tool to be installed first -
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RetroGear
SDL based generic 2D game engine
RetroGear is a generic 2D game engine, designed for the simple and fast retro games development, like those of the 80s. The project aims to create generic components for rapid development of 2D games, based on the most common practices of game programming and design known, giving in the hands of the programmer, standard components and easy to integrate with their own projects. Some of the features offered by this game engine are: A basic but pratical game states management (screen titles, pre-game, game, game over, etc ...) Management of 2D maps, with practical and useful tools for managing graphics, scrolling and collisions. Functions for handling graphics at high and low level, with the addition of functionality to the management of animations of the game entities, in a fully automatic manner. Management of basic audio Scope of game dynamics and designed to be used in a variety of game types, so easy and fast, thanks to the dedicated functionality.
