The Wayback Machine - https://web.archive.org/web/20160224161140/https://github.com/showcases/game-engines

Game Engines

Frameworks for building games across multiple platforms.

@libgdx libgdx/libgdx Java · 8,119 stars
Desktop/Android/HTML5/iOS Java game development framework
@cocos2d cocos2d/cocos2d-x C++ · 7,499 stars
cocos2d-x for C++
@godotengine godotengine/godot C · 5,275 stars
Godot Game Engine
@SFTtech SFTtech/openage C++ · 4,822 stars
Free (as in freedom) open source clone of the Age of Empires II engine :rocket:
@mono mono/MonoGame C# · 3,218 stars
One framework for creating powerful cross-platform games.
@OpenRA OpenRA/OpenRA C# · 2,604 stars

An open-source implementation of the Command & Conquer: Red Alert engine using .NET/Mono and OpenGL.

@turbulenz turbulenz/turbulenz_engine TypeScript · 2,528 stars
Turbulenz is a modular 3D and 2D game framework for making HTML5 powered games for browsers, desktops and mobile devices.
@GarageGames GarageGames/Torque3D C++ · 2,292 stars
MIT Licensed Open Source version of Torque 3D from GarageGames
@Gamua Gamua/Starling-Framework ActionScript · 1,939 stars
The Cross Platform Game Engine
@gameplay3d gameplay3d/GamePlay C++ · 1,724 stars

Cross-platform 3D native C++ game framework for mobile and desktop games.

@GarageGames GarageGames/Torque2D C++ · 1,054 stars
MIT Licensed Open Source version of Torque 2D game engine from GarageGames
@jMonkeyEngine jMonkeyEngine/jmonkeyengine Java · 928 stars
A complete 3D game development suite written purely in Java.
@superpowers superpowers/superpowers-core TypeScript · 898 stars
:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects
@spring spring/spring C++ · 850 stars
A powerful free cross-platform RTS engine
@AdamsLair AdamsLair/duality C# · 500 stars
a 2D Game Development Framework
@panda3d panda3d/panda3d C++ · 364 stars
The Panda3D free open-source cross-platform game engine with excellent Python support
@AtomicGameEngine AtomicGameEngine/AtomicGameEngine C · 352 stars
The Atomic Game Engine: http://www.AtomicGameEngine.com
@Circular-Studios Circular-Studios/Dash D · 297 stars
A free and open 3D game engine written in D.