Injectable LUA scripting system, SDK generator, live property editor
Multi Theft Auto is a game engine
Xash3D FWGS engine
Flax Engine, multi-platform 3D game engine
Cross-platform game engine in Rust
Powerful, mature open-source cross-platform game engine for Python
Stride (formerly Xenko), a free and open-source cross-platform C# game
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Solar2D Game Engine main repository (ex Corona SDK)
Open source clone of the Age of Empires II engine
Voxel game-creation platform with easy modding and game creation
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Free game engine for development of desktop, mobile, and web games
The flexible game engine
Descent 3 by Outrage Entertainment
Open-source engine for Heroes of Might and Magic III
The game engine for everyone
Cross-Platform C++ 2D/3D game engine
Voxel game engine in C++ with OpenGL
The ioquake3 community effort to continue supporting/developing id's
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A pure Go game engine
Cross-platform 2D game engine focused on ultimate productivity
Go bindings for raylib, a simple and easy-to-use library