Open Source Game Engines - Page 3
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Panda3D
Powerful, mature open-source cross-platform game engine for Python
Powerful, mature open-source cross-platform game engine for Python and C++, developed by Disney and CMU. Panda3D is a game engine, a framework for 3D rendering and game development for Python and C++ programs. Panda3D is open-source and free for any purpose, including commercial ventures, thanks to its liberal license. To learn more about Panda3D's capabilities, visit the gallery and the feature list. To learn how to use Panda3D, check the documentation resources. If you get stuck, ask for help from our active community. You can build Panda3D with the Microsoft Visual C++ 2015, 2017, 2019 or 2022 compiler, which can be downloaded for free from the Visual Studio site. You will also need to install the Windows SDK, and if you intend to target Windows Vista, you will also need the Windows 8.1 SDK. -
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PixiJS
The HTML5 Creation Engine
PixiJS is a fast and lightweight 2D rendering library that lets you create rich, interactive graphics, cross platform applications, and HTML5 games even without prior knowledge of WebGL. It’s a fantastic tool for creating rich, interactive content and with built-in cross platform compatibility and graceful degradation, there’s less work for you and more space for fun and creativity! PixiJS works across all devices and is incredibly fast. If you want to create exceptional experiences without having to deal with dense, low level code, browser inconsistencies, WebGL API or device compatibility, PixiJS is for you! See some great examples and creations made with PixiJS in the official website: https://www.pixijs.com/ -
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Planimeter Game Engine 2D
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
Planimeter Game Engine 2D - LÖVE-based game engine for Lua. Planimeter Game Engine 2D was designed for multiplayer-first game experiences and to bring professional-grade game engine features to the hobbyist community. It is the most feature-packed game engine you've ever heard of, and provides more functionality out-of-the-box than most other competing game engines. -
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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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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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flutter_unity_widget
Embeddable unity game engine view for Flutter
Flutter unity 3D widget for embedding unity in flutter. Now you can make awesome gamified features of your app in Unity and get it rendered in a Flutter app both in fullscreen and embeddable mode. Works great on Android, iPad OS, iOS, Web, with Windows nearing completion. There are now two unity app examples in the unity folder, one with the default scene and another based on Unity AR foundation samples. Note: Supports only Unity 2019.4.3 or later. UnityFramework does not support emulators. Note: Please use OpenGLES3 as Graphics API only for now (Android only). This plugin expects you to atleast know how to use Unity Engine. If you have issues with how unity widget is presented, you can please modify your unity project build settings as you see fit. Moving forward, versioning of the package will change to match unity releases after proper test. Mind you this does not mean the package is not compatible with other versions, it just mean it's been tested to work with a unity version. -
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ggez
Rust library to create a Good Game Easily
ggez is a Rust library to create a Good Game Easily. More specifically, ggez is a lightweight cross-platform game framework for making 2D games with minimum friction. It aims to implement an API based on (a Rustified version of) the LÖVE game framework. This means it contains basic and portable 2D drawing, sound, resource loading, and event handling, but finer details and performance characteristics may be different than LÖVE. ggez is not meant to be everything to everyone, but rather a good base upon which to build. Thus it takes a fairly batteries-included approach without needing a million additions and plugins for everything imaginable, but also does not dictate higher-level functionality such as physics engine or entity component system. Instead, the goal is to allow you to use whichever libraries you want to provide these functions or build your own libraries atop ggez. -
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nCine
A cross-platform 2D game engine
nCine is a cross-platform 2D game engine that runs on PC (Linux, Windows, macOS), Android, Raspberry Pi, and the web (Emscripten). The project has been in active development since June 2011. Source code is released under the MIT license and is available on GitHub. Visit the donate page to discover different ways to support and sponsor the project. Join the Discord server and meet the community of developers, users and players. Indent with tabs (4 spaces) but use spaces for continuation line alignment. Pascal case for classes, enumerations, typedefs and constants. Put Doxygen brief descriptions in header files and additional documentation in implementation ones. Use Qt style for Doxygen detailed descriptions (/*! */) and end them with a period. -
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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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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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LambdaHack
Haskell game engine library for roguelike dungeon crawlers
Haskell game engine library for roguelike dungeon crawlers. LambdaHack is a Haskell game engine library for ASCII roguelike games of arbitrary theme, size and complexity, with optional tactical squad combat. It's packaged together with a sample dungeon crawler in a quirky fantasy setting. To use the engine, you need to specify the content to be procedurally generated. You declare what the game world is made of (entities, their relations, physics and lore) and the engine builds the world and runs it. The library lets you compile a ready-to-play game binary, using either the supplied or a custom-made main loop. A couple of frontends are available (SDL2 is the default for desktop and there is a JavaScript browser frontend) and many other generic engine components are easily overridden, but the fundamental source of flexibility lies in the strict and enforced with types separation of engine code from the read-only content and of clients (human and AI-controlled) from the server. -
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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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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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Castle Game Engine
Game engine supporting many 3D/2D formats and graphic effects
This project has moved to: - Our website https://castle-engine.io/ - GitHub repo: https://github.com/castle-engine/castle-engine/ Cross-platform 3D and 2D game engine for Object Pascal. Rendering and processing of game assets in glTF, X3D, VRML, Collada, Spine and other formats. Many graphic effects including shadows, shaders, mirrors, screen effects. Animation, collision detection, 3D sound. Extensible system of 3D objects, with out-of-the-box levels, items, intelligent creatures and more. Desktop, mobile, web plugin. Also home of view3dscene - our full-featured VRML/X3D browser. -
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Clay
High performance UI layout library in C
Clay (short for “C Layout”) is a high-performance 2D UI layout library in C, offering a declarative, Flexbox-like layout model with microsecond performance. It features a single-header design, zero dependencies, and support for WebAssembly, making it lightweight yet powerful for responsive UI rendering. The Clay macro by default accepts an ID as its first argument, which is usually provided by the CLAY_ID() convenience macro. Elements can also be created with auto-generated IDs, by using the CLAY_AUTO_ID() macro. Element IDs have two main use cases. Firstly, tagging an element with an ID allows you to query information about the element later, such as its mouseover state or dimensions. Secondly, IDs are visually useful when attempting to read and modify UI code, as well as when using the built-in debug tools. -
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Ct.js
Ct.js is a desktop game engine that makes learning programming fun
ct.js makes learning programming fun and game development easy by its visual tools, good docs and flexible, modular library. It is free, open-source, and is loved by hobbyists, professionals, teachers, and their students. Bad tools hinder your performance. Ct.js is designed to be like a brush with which you create games, not to be an enemy you will fight with. ct.js bundles come with offline docs, tutorials, and editable examples and demos. The code editor highlights errors and provides documentation right while writing your code. ct.js is based on Pixi.js, works on WebGL and provides great performance in browsers and desktop environments. Modules add new powers, and when ct.js is not enough, you can add any JS code or library. A small stylized adventure with AI-powered sea battles, violent environment, and little puzzle sections. Join the voyage to save a colony from a deadly disease! -
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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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Flame
A Flutter based game engine
Flame is a modular Flutter game engine that provides a complete set of out-of-the-way solutions for games. It takes advantage of the powerful infrastructure provided by Flutter but simplifies the code you need to build your projects. It provides you with a simple yet effective game loop implementation, and the necessary functionalities that you might need in a game. For instance; input, images, sprites, sprite sheets, animations, collision detection, and a component system that we call Flame Component System (FCS for short). You can pick and choose whichever parts you want, as they are all independent and modular. The engine and its ecosystem are constantly being improved by the community, so please feel free to reach out, open issues and PRs as well as make suggestions. Games sometimes require complex feature sets depending on what the game is all about. Some of these feature sets are outside of the scope of the Flame Engine ecosystem. -
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GamePlay
Open-source, cross-platform, C++ game engine for creating 2D/3D games
GamePlay (also known as Gameplay3D) is an open-source, cross-platform C++ game engine and framework that supports both 2D and 3D game development on desktop and mobile platforms. Designed to be lightweight yet powerful, it provides developers with robust tools for graphics rendering, scene management, audio, physics, input, and more, as well as templates and tools to help jumpstart projects. The framework emphasizes ease of use and portability, offering native support for Windows, macOS, Linux, iOS, and Android so developers can write their game once and deploy it across many platforms. With an Apache 2.0 license, developers have broad flexibility to use, modify, and distribute their projects commercially or personally. GamePlay also includes a well-documented API, tooling for asset processing, and examples that demonstrate how to use its systems effectively, making it approachable for both indie developers and experienced programmers. -
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HaxeFlixel
Free, cross-platform 2D game engine powered by Haxe and OpenFL
HaxeFlixel is an open-source 2D game framework built on top of the cross-platform toolkit Haxe + OpenFL, designed to allow developers to build games that can run on web, desktop, and mobile targets from a single codebase. Because it uses Haxe and OpenFL, HaxeFlixel games can compile to many targets: native desktop (Windows, macOS, Linux), mobile (Android, iOS), as well as web (HTML5), and even historically Flash. It is licensed under MIT and completely free for personal or commercial use. HaxeFlixel emphasizes ease of use and rapid development for 2D games — ideal for pixel-art platformers, card games, puzzles, or 2D action games. It includes common utilities and abstractions for sprites, animations, input handling, game loops, asset management, and state transitions, making it easier to build a complete game without reinventing core infrastructure. Because of this, it has been used for successful indie games and prototypes alike, and remains a popular choice among developers. -
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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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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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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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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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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.