Game engines are software frameworks for game development. Game engines do the heavy lifting for developers so they can focus on other aspects of game development.
A hand-crafted 2D game library in Go
Tiny fast HTML5 game engine with many features and no dependencies.
A fast, scalable, distributed game server engine/framework for C++, include the actor library, network library, can be used as a real time multiplaye...
A wonderful list of Game Development resources.
Egret is a brand new open mobile game and application engine which allows you to quickly build mobile games and apps on Android,iOS and Windows.
A powerful free cross-platform RTS game engine. - Report issues at https://springrts.com/mantis/
The multiplayer game engine
Terasology - open source voxel world
3D C++ Game Engine - yet another open source game engine
Godot Minimal Theme
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! ;)
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL, OpenAL & OpenCL. It also includes windowing, mouse, keyboard and joystick input a...
The Atomic Game Engine is a multi-platform 2D and 3D engine with a consistent API in C++, C#, JavaScript, and TypeScript
fheroes2 is a recreation of Heroes of Might and Magic II game engine
3D Engine with Blender Integration
Murder is a pixel art ECS game engine.
Free Android 2D OpenGL Game Engine
A game engine with a fully bindless, GPU-driven renderer featuring real-time path-traced global illumination, hardware ray tracing, and a physics simu...
Go 3D Game Engine (http://g3n.rocks)
A lightweight Game Engine for React Native 🕹⚡🎮
A curated list of awesome PICO-8 resources, carts, tools and more
Korge is a Multiplatform Game Engine written in Kotlin for JVM, Web, Android and iOS.
Descent 3 by Outrage Entertainment
Modern C++14 game engine with Vulkan support, fully featured editor and C# scripting
Solar2D Game Engine main repository (ex Corona SDK)
An OpenGL RTS game engine written in C
Xash3D FWGS engine
Open source reimplementation of GTA San Andreas game engine in Unity
Lua Virtual Reality Framework
A 3D and 2D game engine for Python
Go bindings for raylib, a simple and easy-to-use library to enjoy videogames programming.
3D game engine with lua scripting
A ROS/ROS2 Multi-robot Simulator for Autonomous Vehicles
A complete and cross-platform game engine designed for flexibility, performance and fast iteration.
A reimplementation of the minecraft server in rust.
XMage - Magic Another Game Engine
🎮 Your friendly TypeScript 2D game engine for the web 🗡️
3D Software Renderer in 700 Lines !!
Embeddable unity game engine view for Flutter. Advance demo here https://github.com/juicycleff/flutter-unity-arkit-demo
Community effort to maintain and improve Jedi Academy (SP & MP) + Jedi Outcast (SP only) released by Raven Software
Web powered cross-platform 3D, WebXR game engine.
OpenRW "Open ReWrite" is an un-official open source recreation of the classic Grand Theft Auto III game executable
Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
Claw3D is an open source 3D engine built on OpenClaw for creating games, simulations, and high-performance 3D applications.
Free, cross-platform 2D game engine powered by Haxe and OpenFL
KlayGE is a cross-platform open source game engine with plugin-based architecture.
dhewm 3 (Doom3 sourceport) main repository
Amazon Lumberyard is a free AAA game engine deeply integrated with AWS and Twitch – with full source.
Python MUD/MUX/MUSH/MU* development system
2D game development library for Ruby and C++