Injectable LUA scripting system, SDK generator, live property editor
Multi Theft Auto is a game engine
Xash3D FWGS engine
Powerful, mature open-source cross-platform game engine for Python
Solar2D Game Engine main repository (ex Corona SDK)
Open-source engine for Heroes of Might and Magic III
Free game engine for development of desktop, mobile, and web games
The game engine for everyone
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Voxel game-creation platform with easy modding and game creation
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Descent 3 by Outrage Entertainment
Stride (formerly Xenko), a free and open-source cross-platform C# game
Cocos simplifies game creation and distribution with Cocos Creator
Open source clone of the Age of Empires II engine
Cross-platform 2D and 3D game engine with modular architecture
A game framework written with osu! in mind.
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
dhewm 3 main repository
A game engine with an emphasis on real-time cutting-edge solutions
The ioquake3 community effort to continue supporting/developing id's
Multi-platform 2D and 3D game engine
Svelto ECS C# Entity Component System