Open Source Linux Game Engines - Page 2
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Game Engines for Linux
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Descent 3
Descent 3 by Outrage Entertainment
The Descent3 repository is the open source release of the Descent 3 game engine by Outrage Entertainment, maintained by the community under the GPL-3.0 license. It provides the full C and C++ engine source code, including the historically significant “1.5” patch that was previously created by developers and later stabilized by fans. The codebase covers the game’s rendering, physics, audio, networking, tools, and editor components, allowing enthusiasts to build, run, and modify the classic 6-degrees-of-freedom space shooter on modern systems. To actually play the game, users must supply their own original game assets, following instructions in the repository’s usage documentation. The project uses CMake and related modern tooling for cross-platform builds, with support for Linux and Windows among other environments. A dedicated community maintains the engine, publishes updated releases, documents internals on a wiki, and coordinates contributions via an active Discord server and GitHub. -
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Sketchbook
3D playground built on three.js and cannon.js
3D playground built on three.js and cannon.js. Simple web-based game engine built on three.js and cannon.js focused on third-person character controls and related gameplay mechanics. Mostly a playground for exploring how conventional third-person gameplay mechanics found in modern games work and recreating them in a general way. Raycast character controller with capsule collisions. General state system. You can define your own scenes in Blender, and then read them with Sketchbook. Sketchbook needs to run on a local server such as HTTP-server or webpack-dev-server to be able to load external assets. -
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OpenXRay
Improved version of the X-Ray Engine, the game engine
Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! OpenXRay is an improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. We want to keep the game as close as possible to the vanilla game, so instead of introducing new gameplay features, consider adding non-gameplay features, fixing bugs, improving performance and code quality. The dev branch is the default and base branch for the project. It is used for development and all Pull Requests should go there. But, be aware that this branch, sometimes, may be broken and, rarely, we can do force pushes to this branch. -
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microStudio
Free, open source game engine online
microStudio is a free, open source game engine online. It is also a platform to learn and practice programming. microStudio can be used for free. You can also install your own copy, to work locally or on your own server for your team or classroom. microStudio is available online, this is the simpler and the preferred way, you will have access to all the online collaboration features, online publishing, and more export features. You don't even need to create an account, you can start working as a guest. microStudio includes all you need to write code, create sprites and maps for your 2D game. All from your web browser. Your project is stored in the cloud, and accessible from anywhere. Write your game code in microScript, a simple language inspired by Lua. The documentation is always there to help. Create cool demos in just a few lines of code. microScript shines by its simplicity and interactivity. But you can also code in JavaScript, Python, or Lua if you prefer. -
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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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Spring RTS Engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Spring is a versatile 3D RTS game engine. Using extensively Lua for scripting game-specific code to make nearly every aspect of the engine customizable, from GUI, to unit AI, to pathfinding. -
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PainTown
Paintown is a 2d fighting game engine.
Paintown is a 2d side scrolling beatem-up engine. Paintown supports game styles similar to the Sega Genesis game, Streets of Rage 2, as well as traditional 1 vs 1 fighting games through an implementation of MUGEN. Many aspects of Paintown are customizable, from the menu system to the levels and players that can be controlled. Paintown is highly portable. So far Paintown can run on Windows, OSX, Linux, BSD, Wii, PS3, Android and other systems. -
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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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Thunder Engine
Cross-platform 2D and 3D game engine with modular architecture
Thunder is a lightweight, modular game engine written in C++ that provides a robust foundation for creating 2D and 3D games across platforms. It emphasizes a clean, component-based architecture and is designed for flexibility, performance, and scalability. Thunder includes built-in support for scripting, resource management, physics, animation, and rendering, with tools that facilitate efficient game development and deployment. Its cross-platform nature and minimal dependencies make it suitable for indie developers and small teams looking to build polished games with modern features. -
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VoxelCore
Voxel game engine in C++ with OpenGL
VoxelEngine-Cpp is a minimal voxel engine written in modern C++ using OpenGL, GLFW, and GLM, inspired by Minecraft-style block worlds. It offers a clean foundation for learning and experimenting with voxel-based rendering and world generation. With features like chunk loading, perlin noise terrain generation, and basic lighting, the engine is a perfect starting point for developers who want to create sandbox games or explore the technical aspects of 3D voxel environments. -
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dhewm 3
dhewm 3 main repository
dhewm3 is a source port of the original Doom3 (not Doom3 BFG, for that you may want to try RBDoom3BFG). It’s known to work on Windows, Linux, macOS, FreeBSD, OpenBSD and AROS, but it should work on (or be easily portable to) any system that supports OpenGL 1.4 with ARB shaders, SDL and OpenAL. Compared to the original version of Doom3, dhewm3 has many bugfixes, supports EAX-like sound effects on all operating systems and hardware (via OpenAL Softs EFX support), has much better support for widescreen resolutions and has 64bit support. It only supports old Mods if they either don’t require their own game DLL or have been ported to dhewm3. Note that while the Doom3 source code has been released under GPL, you still need to legally own the game and provide dhewm3 the game data to play. See the How to Install section for more information. -
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openage
Open source clone of the Age of Empires II engine
openage is a free cross-platform RTS game engine that provides the mechanics of Age of Empires. Using modern technologies as C++17, OpenGL/GLSL, Python, Qt5 and CMake allows people using GNU/Linux, BSD, macOS or Windows to play the game natively. Our aim is to make openage a platform for the original Age of Empires games providing the same look and feel, but with more features for modding and multiplayer. openage uses an open API powered by our human-readable configuration language nyan. We implement a client-server architecture with dedicated servers that supports more than 8 players. The overarching system will provide matchmaking, lobbies, server discovery and other community features. openage is a community project that values every contribution, the only requirement is your enthusiasm. Don't hesitate to get in touch with us if you want to help! -
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Bevy
A refreshingly simple data-driven game engine built in Rust
A refreshingly simple data-driven game engine built in Rust. All engine and game logic uses Bevy ECS, a custom Entity Component System. Massively Parallel and Cache-Friendly. The fastest ECS according to some benchmarks. Components are Rust structs, Systems are Rust functions. Queries, Global Resources, Local Resources, Change Detection, Lock-Free Parallel Scheduler. Bevy is still in the very early stages of development. APIs can and will change (now is the time to make suggestions!). Important features are missing. Documentation is sparse. Please don't build any serious projects in Bevy unless you are prepared to be broken by API changes constantly. Bevy relies heavily on improvements in the Rust language and compiler. As a result, the Minimum Supported Rust Version (MSRV) is "the latest stable release" of Rust. Built directly on top of Bevy's ECS, Renderer, and Scene plugins. -
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Jolt Physics
A multi core friendly rigid body physics and collision detection lib
A multi core friendly rigid body physics and collision detection library suitable for games and VR applications, used by Horizon Forbidden West. So why create yet another physics engine? First of all, this has been a personal learning project and secondly I wanted to address some issues that I had with existing physics engines. In games we usually need to do many more things than to simulate the physics world and we need to do this across multiple threads. We therefore place a lot of emphasis on concurrently accessing the physics simulation data outside of the main physics simulation update. Sections of the world can be loaded / unloaded in the background. A batch of physics bodies can be prepared on a background thread without locking or affecting the physics simulation and then inserted into the world all at once with a minimal impact on performance. -
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OpenDiablo2
An open source re-implementation of Diablo 2
This is an open-source re-implementation of the classic action-RPG Diablo II (including its expansion) — or rather, a game engine that can run it. The engine is written in Go and cross-platform, aiming to bring the feel of the original 2000s-era ARPG to modern systems. Because the project does not include the original game assets, users must supply their legally purchased copy of Diablo II / Lord of Destruction; the engine then loads the MPQ archives and runs the game. The project is organized into a core engine (now evolving into a more generic 2D ARPG engine under Abyss Engine) plus toolset and support libraries. While still a work-in-progress, OpenDiablo2 has made strides: the main menu works, character selection and basic UI panels load, and movement in the first act is possible. The goal is eventually to support full gameplay — potentially allowing modders or developers to extend or make new games atop the engine. -
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Redot Engine
Multi-platform 2D and 3D game engine
Redot Engine is an open-source game engine that aims to provide a flexible foundation for building games — likely offering a modern, modular structure so developers can compose only the systems they need (rendering, physics, input, scripting, etc.). It is built to give a base framework rather than a full “batteries-included” engine, which makes it suitable for developers who prefer minimalism, want complete control over architecture, or desire to build custom workflows. Because it’s open-source, Redot-Engine is potentially community-driven, allowing anyone to inspect, extend, or customize core functionalities. Its modularity and open nature make it attractive for indie developers or hobbyists who want to avoid heavyweight engines with lots of built-in assumptions. Even if the engine may not yet rival more mature engines in features or polish, its openness and design philosophy can offer an appealing balance between simplicity and flexibility. -
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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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Defold
Free game engine for development of desktop, mobile, and web games
Defold is an open-source, cross-platform game engine originally developed for 2D games but also capable of 3D — intended to give developers a turnkey solution for building games for desktop, mobile, web, and even consoles. It ships as a full editor/IDE, combining scene editing, asset management, scripting, and build/export pipelines, so developers don’t need to assemble disparate tools themselves. Game logic is written in Lua (with optional native extensions in C/C++ when needed), and the engine uses a component-based system and a message-passing paradigm to manage object interactions — a design that promotes loosely-coupled, reactive game code rather than traditional heavy OOP. Defold is optimized for efficiency: exported games tend to have small binary size and low memory use, making it appealing for mobile, HTML5/web, and lightweight games. -
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Lumos Engine
Cross-Platform C++ 2D/3D game engine
Cross-platform 2D and 3D Game Engine written in C++ that supports both OpenGL and Vulkan. Support for Windows, Linux, macOS. Support for OpenGL/Vulkan. D audio using OpenAL. Rendering 3D models with PBR shading. Debug gui using ImGui 3D collision detection - cuboid/sphere/pyramid. 2D collision detection - Box2D. Basic lua scripting support. -
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Murder Engine
Murder is a pixel art ECS game engine
Murder is an open-source, pixel-art–focused, entity-component-system (ECS) game engine built on top of FNA (a reimplementation of MonoGame). The engine aims to give developers a solid, flexible foundation for building 2D games with a retro/pixel-art aesthetic, while leaning into modern ECS architecture to separate data (components) from behavior (systems). Because Murder is in active development and still relatively young, the authors warn that breaking changes are possible — but this also means the engine is evolving rapidly as features are added and refined. Using Murder, you get a lot of the low-level plumbing handled: rendering, input, update-loop, resource loading — so you can focus on actual game logic, art, and design instead of boilerplate. It powers projects like games built by its creators and even won a game-jam with one of those, demonstrating that despite its youth, it's already production-capable. For developers comfortable working in C# and aiming for indie 2D games. -
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OGRE
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce games and demos utilizing 3D hardware. The class library abstracts all the details of using the underlying system libraries like Direct3D and OpenGL and provides an interface based on world objects and other intuitive classes. We consider the results of our GL3Plus RenderSystem as the gold standard. The respective shaders are generated by the RTSS component with per-pixel specular lighting. Therefore the legacy render systems naturally have differences due to the use of fixed-function. However, when rendering diffuse surface both produce pixel-perfect results. Simple, easy to use OO interface designed to minimise the effort required to render 3D scenes, and to be independent of 3D implementation i.e. Direct3D/OpenGL. -
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Pyxel
A retro game engine for Python
A retro game engine for Python. Thanks to its simple specifications inspired by retro gaming consoles, such as only 16 colors can be displayed and only 4 sounds can be played back at the same time, you can feel free to enjoy making pixel art style games. The motivation for the development of Pyxel is the feedback from users. Please give Pyxel a star on GitHub! Pyxel's specifications and APIs are inspired by PICO-8 and TIC-80. Pyxel is open source and free to use. Let's start making a retro game with Pyxel! Runs on Windows, Mac, Linux, and Web. Using the Pyxel Web Launcher or custom elements for HTML, you can run Pyxel in a web browser without any installation work. Pyxel supports a dedicated application distribution file format (Pyxel application file) that works across platforms. 8 musics that can combine arbitrary sounds. -
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Spartan Engine
A game engine with an emphasis on real-time cutting-edge solutions
SpartanEngine is a C++ game engine focused on cutting-edge real-time rendering and simulation, developed primarily as a long-running personal research project and now grown into a community-driven platform. It centers around a modern Vulkan renderer (with an in-progress DirectX 12 backend) and a fully bindless, unified deferred rendering pipeline designed to handle hundreds of millions of instances. The engine implements a wide range of advanced graphics features, such as atmospheric scattering, physically based shading, screen-space shadows and ambient occlusion, screen-space reflections, sophisticated shadow mapping, volumetric fog, and HDR output. It supports next-gen performance and image quality technologies including variable rate shading, dynamic resolution scaling, temporal anti-aliasing, and upscaling via XeSS 2 and FSR 3. Beyond rendering, SpartanEngine offers PhysX-powered physics, CPU and GPU profiling, a thread pool for parallel workloads. -
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VASSAL is a game engine for creating electronic versions of traditional board and card games. It provides support for game piece rendering and interaction, and supports play by email or over a live connection.
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3DWorld
3D Procedural Game Engine Using OpenGL
3DWorld is a cross-platform OpenGL-based 3D Game Engine that I've been working on since I took the CS184 computer graphics course at UC Berkeley in 2001. I converted the project from svn to git at commit 6607. Most of the code is written in C++, with GLSL for shaders. This is intended to be a cross-platform project. Microsoft Visual Studio 2019 and 2022 project files are included. A linux/gcc makefile is also included, but is more experimental. See README.linux for more details. The project should build under gcc on linux with some work, but it's been a while since I tried this. I have an old makefile that is out of date, but may not take too much work to fixup and make it usable. Realtime day/night cycle with weather (rain, snow, hail, wind, lightning). Physically based materials with reflection and refraction. Dynamic shadows, ambient occlusion, up to 1024 dynamic light sources, postprocessing effects. Built-in first person shooter game "smiley killer".
