C++ Game Engines for Linux

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Browse free open source C++ Game Engines for Linux and projects below. Use the toggles on the left to filter open source C++ Game Engines for Linux by OS, license, language, programming language, and project status.

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  • 1
    Source Engine

    Source Engine

    Modified source engine (2017) developed by valve and leaked in 2020

    The Source Engine repository under that particular GitHub user appears to be a custom (or forked) version of a game engine — likely an engine derived from or inspired by the classic Source engine lineage (or at least the name evokes that lineage). However, publicly-available documentation, community support or clarity about the project’s scope and maturity seems limited: the repo does not clearly advertise a full engine release or wide adoption. As such, it feels more like an experimental or hobby project: potentially a work-in-progress engine or engine-in-progress reimplementation rather than a full production-ready game engine. For a developer, this means you're likely to face missing features, limited tooling, and the need to fill gaps yourself, but also that you have a chance to influence or shape the architecture as you develop.
    Downloads: 285 This Week
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  • 2
    Exult
    A game engine for running Ultima7 on modern operating systems, plus a map-editor and other tools for creating your own mods and games.
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    Downloads: 793 This Week
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  • 3
    Cube 2: Sauerbraten (game engine & FPS)
    3D game engine (more powerful redesign of the Cube engine) and FPS game
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    Downloads: 713 This Week
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  • 4
    Unreal Engine 4/5 Scripting System

    Unreal Engine 4/5 Scripting System

    Injectable LUA scripting system, SDK generator, live property editor

    Lua scripting system platform, C++ Modding API, SDK generator, blueprint mod loader, live property editor and other dumping utilities for UE4/5 games. The goal of UE4SS is not to be a plug-n-play solution that always works with every game. The goal is to have an underlying system that works for most games.
    Downloads: 111 This Week
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  • 5
    Multi Theft Auto: San Andreas

    Multi Theft Auto: San Andreas

    Multi Theft Auto is a game engine

    Multi Theft Auto (MTA) is a software project that adds network play functionality to Rockstar North's Grand Theft Auto game series, in which this functionality is not originally found. It is a unique modification that incorporates an extendable network play element into a proprietary commercial single-player PC game. Multi Theft Auto is based on code injection and hooking techniques whereby the game is manipulated without altering any original files supplied with the game. The software functions as a game engine that installs itself as an extension of the original game, adding core functionality such as networking and GUI rendering while exposing the original game's engine functionality through a scripting language. Originally founded back in early 2003 as an experimental piece of C/C++ software, Multi Theft Auto has since grown into an advanced multiplayer platform for gamers and third-party developers.
    Downloads: 110 This Week
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  • 6
    GemRB Game Engine

    GemRB Game Engine

    GemRB is a portable open-source implementation of the Infinity Engine

    GemRB (Game engine made with pre-Rendered Background) is a portable open-source implementation of Bioware's Infinity Engine. It was written to support pseudo-3D role playing games based on the Dungeons & Dragons ruleset (Baldur's Gate and Icewind Dale series, Planescape: Torment). It should run on GNU/Linux, Microsoft Windows, OS X, possibly other UNIX derivatives and more. It is licensed under the GPL.
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    Downloads: 193 This Week
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  • 7
    GDevelop

    GDevelop

    The game engine for everyone

    GDevelop is an open-source, cross-platform game development software designed to make creating HTML5 and native games easy for everyone. Experts and novices alike can create their own games with GDevelop as it is fast and easy to learn, requiring no knowledge in a specific programming language. What makes GDevelop unique and so easy to use is its powerful and intuitive event-based system. Events are a powerful way to build up your game logic, without having to learn a programming language. GDevelop also features ready-made behaviors for your game objects, and allows you to create new behaviors through the easy to learn events. And when you're done, you can publish your game just about anywhere-- web, iOS, Android, Windows, Mac, Linux and even Facebook Messenger. Making games has never been easier or faster than with GDevelop!
    Downloads: 34 This Week
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  • 8
    Solar2D Game Engine

    Solar2D Game Engine

    Solar2D Game Engine main repository (ex Corona SDK)

    This is a fully open source project that is forked of the well-established and widely used Corona SDK game engine, which is no longer commercially supported. Development is lead by Vlad Shcherban, former technical lead engineer at Corona Labs Inc. If you are using this engine, consider supporting its development. Develop for mobile, desktop, and connected TV devices with just one code base: iOS, tvOS, Android, Android TV, macOS, Windows, Linux, or HTML5. Update your code, save the changes, and instantly see the results in our instant-update Simulator. When you're ready to test on real devices, build and deploy your app just once and then see code/assets update automatically, all over your local network. It's like magic. Select from numerous plugins which extend the Solar2D core for features like in-app advertising, analytics, media, and much more. A vast variety of plugins is available via Solar2D free directory or third party stores, like Solar2D Marketplace and Solar2D Plugins.
    Downloads: 30 This Week
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  • 9
    VCMI Project

    VCMI Project

    Open-source engine for Heroes of Might and Magic III

    VCMI is work-in-progress attempt to recreate engine for Heroes III, giving it new and extended possibilities. To use VCMI you need to own original data files.
    Downloads: 26 This Week
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  • 10
    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: 133 This Week
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  • 11
    Luanti

    Luanti

    Voxel game-creation platform with easy modding and game creation

    Luanti, originally known as Minetest, is a free, open-source voxel game engine and platform designed to let players, modders, and developers build and play diverse sandbox-style 3D worlds. Written in C++ for core performance and Lua for scripting, Luanti runs on multiple operating systems (Windows, macOS, Linux, BSD variants and even Android), making it highly accessible and cross-platform. Rather than being a single game, Luanti is meant as an engine and toolkit: individual “games” are actually collections of mods — written in Lua — that define terrain, items, NPCs, mechanics, and rules. This modular design enables rich customization and community-driven content: users can install new games, mods, and texture packs via a built-in content browser that draws from a central repository (ContentDB). Luanti supports both single-player and multiplayer via servers; players can host their own or join publicly listed ones, with server-side mods being applied automatically.
    Downloads: 21 This Week
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  • 12
    Defold

    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.
    Downloads: 17 This Week
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  • 13
    Redot Engine

    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.
    Downloads: 12 This Week
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  • 14
    dhewm 3

    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.
    Downloads: 12 This Week
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  • 15
    Spring RTS Engine

    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.
    Downloads: 49 This Week
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  • 16
    Amazon Lumberyard

    Amazon Lumberyard

    Amazon Lumberyard is a free AAA game engine

    Amazon Lumberyard is (or was) a free AAA-capable game engine developed by AWS, with deep integration into AWS cloud services and the Twitch streaming platform. It provided full source access and offered developers tools to build high-quality games and simulations with networking, rendering, physics and cloud backend features built in. The engine allowed game creators to hook into AWS infrastructure for multiplayer services, analytics, voice chat, and more, and leveraged Twitch to build live-stream-enabled experiences. Although Amazon has since archived the repository and transitioned focus to the open-source successor Open 3D Engine (O3DE), the project remains of interest as a large-scale example of cloud-enabled game engine architecture. Developers studying game tech or infrastructure integration can inspect how the engine’s subsystems were designed, including entity/component architectures, rendering pipelines and networked game services.
    Downloads: 9 This Week
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  • 17
    Jolt Physics

    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.
    Downloads: 8 This Week
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  • 18
    Open 3D Engine (O3DE)

    Open 3D Engine (O3DE)

    Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D

    Easier team collaboration, artist workflows & multiplayer setup, increased terrain performance, new rendering features. Developed with cutting-edge, real-time graphics and complex interactions in mind, O3DE allows you to create robust, engaging experiences using our multi-threaded and extensible photorealistic renderer. O3DE's modular architecture is built for customization from day one. Each component, known as a Gem, can be adopted separately, giving you access to the specific functionality needed for your application. Add new editing tools, features, and development workflows to your projects. Choose from a variety of community-maintained Gems to extend and enhance the engine's capabilities in anything from AI and robotics to push notifications and VR.With our engine's SDK capabilities, you can use O3DE as a foundation for any type of 3D project you can imagine.
    Downloads: 7 This Week
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  • 19
    Urho3D

    Urho3D

    Urho3D Game engine

    Urho3D is a game engine made by developers, for developers. The code is clean and well-commented. Urho3D is free and will always be free. There is no hidden royalties. It is IDE-agnostic and has no vendor lock-in. Urho3D runs on Windows, Linux, macOS/iOS/tvOS, Android, and even on Raspberry Pi. It also runs on your browsers. You need an installed Urho3D library for the desired target platform to proceed. Although the Urho3D build system also supports linking the Urho3D library directly from its build tree, this quick start section will not be discussing it here. Assuming you have been following along from the previous section, execute the following commands to create a new UrhoApp project, and then build it. The build artifacts from DBE can be found in the usual location as the conventional (non-dockerized) build environment. In fact the build artifacts from DBE should function and work as if they are built using the conventional way too.
    Downloads: 7 This Week
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  • 20
    fheroes2

    fheroes2

    fheroes2 is a recreation of Heroes of Might and Magic II game engine

    fheroes2 is a recreation of the Heroes of Might and Magic II game engine. This open-source multiplatform project, written from scratch, is designed to reproduce the original game with significant improvements in gameplay, graphics and logic (including support for high-resolution graphics, improved AI, numerous fixes and user interface improvements), breathing new life into one of the most addictive turn-based strategy games. You can find a complete list of all of our changes and enhancements in its own wiki page.
    Downloads: 7 This Week
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  • 21
    PainTown

    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.
    Downloads: 35 This Week
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  • 22
    Cocos Engine

    Cocos Engine

    Cocos simplifies game creation and distribution with Cocos Creator

    The Cocos Engine repository powers the open-source core of Cocos Creator, a cross-platform game engine and editor designed for building 2D and 3D games for web and native targets. It aims to simplify game creation and distribution, with support for high-performance rendering, physics, scene management, asset pipelines, and more. The engine is built using a mix of C++ (for performance-critical systems) and TypeScript/JavaScript (for scripting), enabling developers to script game logic while relying on a robust, high-performance core. Because of its cross-platform nature, games built with cocos-engine (via Cocos Creator) can target mobile, desktop, and web, making it a popular choice for developers wanting flexibility and broad reach. The engine includes extensive tooling and example/demo projects to demonstrate 2D and 3D physics, animation, UI and rendering capabilities.
    Downloads: 5 This Week
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  • 23
    Spartan Engine

    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.
    Downloads: 5 This Week
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  • 24
    OPL2

    OPL2

    Open source, moddable game engine for the "Polygon Love 2" game

    OPL2 is an open source, extremely moddable replacement for the Polygon Love 2 game engine, written in Python and C++ and using the Panda3D game engine ( www.panda3d.org ) OPL2 is just an engine, you will need the files from the original game to be able to play. OPL2 doesn't contain any copyrighted material from the original game/engine. While Polygon Love 2 is an erotic/life simulation game, the OPL2 engine does not contain any explicit material itself. OPL2 is heavily moddable and can be used for many other things such as cosplay simulation. Hongfire thread to talk about the game: http://www.hongfire.com/forum/showthread.php/410086-OPL2-open-source-and-moddable-3d-hentai-game/page27?highlight=opl2 (WARNING! EXPLICIT CONTENT!)
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    Downloads: 61 This Week
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  • 25
    Aleph One: Marathon Open Source
    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.
    Downloads: 18 This Week
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