Open Source Game Engines - Page 3
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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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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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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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Turbulenz Engine
Turbulenz is a modular 3D and 2D game framework
Turbulenz Engine is a powerful, modular open-source game framework built in JavaScript and TypeScript that enables developers to create both 2D and 3D games that run directly in HTML5-compatible browsers as well as on desktops and mobile devices. The engine is designed to support rich multimedia applications without the need for plugins, using modern web technologies for graphics, physics, input, sound, networking, and asset management. It includes not only the low-level APIs for rendering and resource control but also high-level systems like scene graphs, animation, physics modules, and service APIs that handle game-specific features like leaderboards and multiplayer. Because it’s modular, developers can pick and choose the systems they need or build on top of the framework to create custom tooling and workflows tailored to their projects. Turbulenz also comes with extensive samples and example applications that demonstrate best practices in rendering, physics, user interaction, etc. -
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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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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. -
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Hypackel Engine
JavaScript-based game engine designed to empower developers
Hypackel Engine is a JavaScript-based 2D game engine designed to provide beginner-friendly tools for creating simple games such as platformers, RPGs, and top-down shooters. It focuses on accessibility by offering a lightweight and easy-to-integrate script that developers can import directly into web-based projects. The engine includes built-in systems for handling physics, collisions, rendering, and animation, allowing developers to focus more on gameplay logic rather than low-level implementation details. Its architecture is structured around modular systems like sprites, particles, and audio, which can be controlled through simple function calls and arrays. The project emphasizes simplicity and rapid prototyping, making it suitable for educational purposes or small-scale game development. It also includes example files and documentation to guide users through setup and usage. Overall, HYPACKEL-ENGINE-1 serves as an entry-level framework for experimenting with game development. -
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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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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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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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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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Blueshift Game Engine
Blueshift is a cross-platform 3D game engine implemented in C++
Blueshift is a cross-platform 3D game engine implemented in C++. it's free, open-source, and works on Windows, macOS, iOS, and Android. The project is currently in an early stage of development. -
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Flax Engine
Flax Engine, multi-platform 3D game engine
The most agile game engine is now available. Full source code. Full power. Fully featured. Flax Engine is a high-quality modern 3D game engine written in C++ and C#. From stunning graphics to powerful scripts - Flax can give everything for your games. Designed for fast workflow with many ready-to-use features waiting for you right now. Flax Visual Studio extension provides better programming workflow, C# scripts debugging functionality, and allows to attach to running engine instance to debug C# source. Unleash your creativity and be more productive. With Flax you can boost your game development and bring it to another level. We’ve created tools that are slim and agile. No more lagging actions, long importing, or slow compilation. Everything you do as a developer with Flax is meant to be instant. Flax was built up with the idea of giving more power to the creators. Game development tools we create are making this goal possible. -
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Gosu
2D game development library for Ruby and C++
Gosu is a 2D game development library for Ruby and C++. It’s available for macOS, Windows, Linux, and iOS. Gosu is focused, lightweight and has few dependencies (mostly SDL 2). It provides a window and a main loop. 2D graphics and text, powered by OpenGL or OpenGL ES. Sounds and music, keyboard, mouse, and gamepad input. Gosu is mostly used to teach or learn Ruby or in short game development competitions. It’s also a great prototyping tool and should work for indie game development, though nobody has really tried that. In addition to the documentation linked from the sidebar, there is a free book by Mark Sobkowicz that will guide you through the creation of four different games. -
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NettyGameServer
A mobile game distributed server implemented using netty4.X
A mobile game distributed server implemented using netty4.X, supports tcp, udp, http, websocket links, uses protobuf custom protocol stack for network communication, supports rpc remote calls, uses mybatis3 to support db storage sub-database sub-table, supports asynchronous mysql Storage, update the reids cache synchronously when the db is saved. Use the ExcelToCode project to generate java classes and json data dictionaries from excel data, and DictService directly reads json to reduce part of the data dictionary code. Use the game-executor project to increase the asynchronous event global service in the game, support event sharding, and balance asynchronous execution event logic. Use netty's proxy mode to increase gateway proxy forwarding. -
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NoahGameFrame
A fast, scalable, distributed game server engine/framework for C++
A fast, scalable, distributed game server engine/framework for C++, including the actor library, and network library, can be used as a real-time multiplayer game engine ( MMO RPG/MOBA ), which supports C#/Lua script/ Unity3d, Cocos2dx and plan to support Unreal. Easy-to-use, interface-oriented design. An extensible plugin framework that makes getting your application running quick and easy. A clean, uncluttered design and stable engine that has been used in several commercial products. A high-performance actor model (by a safe thread pool). Event and attribute-driven, making it clear and easy to maintain your business. Based on standard C++ development, ensuring cross-platform support. An existing C++ and C# game client for rapid development. Cross-platform support. -
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OpenFL
Open source library for creative expression on the web, desktop, etc.
OpenFL is a free and open-source, cross-platform software framework that empowers developers to create rich interactive applications and games using a single codebase that can run on web browsers, mobile devices, desktops, and even some consoles. It builds on the Haxe programming language and offers a familiar display list and event-driven API inspired by classic Adobe Flash and AIR, allowing developers to leverage well-known paradigms while targeting modern platforms. OpenFL supports 2D and limited 3D graphics rendering, audio playback, advanced user input (mouse, touch, keyboard, gamepads), rich text formatting, asset management, networking, and file system access, making it a comprehensive foundation for interactive experiences. Projects written with OpenFL can compile to native C++ executables, JavaScript/WebGL for web, or run through app runtimes like Electron without plugins, enabling high performance and broad reach. -
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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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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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ÖbEngine
2D Game Engine with Lua Scripting made on top of SFML
ObEngine is a free and open-source 2D game engine designed to make game development fun and accessible by combining a C++ core with powerful Lua scripting, providing both performance and ease of use. Built on top of the Simple and Fast Multimedia Library (SFML), the engine gives developers access to rendering, input, audio, and windowing systems while they write gameplay logic in Lua, a lightweight scripting language that simplifies interaction with game objects and behavior. ObEngine includes tools like a map editor, plugin system, and asset management features that streamline the creation of complex 2D games such as platformers, RPGs, racers, and visual novels without reinventing low-level systems. Its architecture encourages modularity, letting developers extend or customize engine features through plugins and scripting while still benefiting from the speed and control of native C++ performance. -
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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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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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Entitas Game Engine
Entitas is a super fast Entity Component System (ECS) Framework
Entitas is a super fast Entity Component System Framework (ECS) specifically made for C# and Unity. Internal caching and blazing-fast component access make it second to none. Several design decisions have been made to work optimally in a garbage-collected environment and to go easy on the garbage collector. Entitas comes with an optional code generator which radically reduces the amount of code you have to write and makes your code read like well-written prose. Entitas is fast, and light and gets rid of unnecessary complexity. There are less than a handful of classes you have to know to a rocket start your game or application. The Code Generator generates classes and methods for you, so you can focus on getting the job done. It radically reduces the amount of code you have to write and improves readability by a huge magnitude. It makes your code less error-prone while ensuring the best performance. -
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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.
