Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Godot is a powerful cross-platform game engine
Real Time Strategy game engine supporting early Westwood classics
Multi Theft Auto is a game engine
Xash3D FWGS engine
The Ren'Py Visual Novel Engine
Voxel game-creation platform with easy modding and game creation
Open source voxel game engine with support for survival and crafting
The game engine for everyone
The flexible game engine
A game engine powered by python and panda3d
dhewm 3 main repository
A refreshingly simple data-driven game engine built in Rust
A complete 3-D game development suite written in Java
The ioquake3 community effort to continue supporting/developing id's
Cocos simplifies game creation and distribution with Cocos Creator
Fast and lightweight JavaScript game engine built on WebGL and glTF
Powerful, mature open-source cross-platform game engine for Python
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Free game engine for development of desktop, mobile, and web games
Recreation of the classic Grand Theft Auto III game executable
Solar2D Game Engine main repository (ex Corona SDK)
Open-source engine for Heroes of Might and Magic III
Voxel game engine in C++ with OpenGL
A modular Common Lisp game engine