Godot is a powerful cross-platform game engine
Xash3D FWGS engine
Open source voxel game engine with support for survival and crafting
Voxel game-creation platform with easy modding and game creation
The Ren'Py Visual Novel Engine
Real Time Strategy game engine supporting early Westwood classics
A game engine powered by python and panda3d
Multi Theft Auto is a game engine
The game engine for everyone
LayaAir is an open-source 2D/3D engine
A modular Common Lisp game engine
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Cocos simplifies game creation and distribution with Cocos Creator
Fast and lightweight JavaScript game engine built on WebGL and glTF
Cross-platform 2D and 3D game engine with modular architecture
Open source clone of the Age of Empires II engine
RPG Maker 2000/2003 and EasyRPG games interpreter
Voxel game engine in C++ with OpenGL
A multi core friendly rigid body physics and collision detection lib
Free game engine for development of desktop, mobile, and web games
A refreshingly simple data-driven game engine built in Rust
Open-source engine for Heroes of Might and Magic III
Cross-Platform C++ 2D/3D game engine
Powerful, mature open-source cross-platform game engine for Python
A complete 3-D game development suite written in Java