Godot is a powerful cross-platform game engine
The flexible game engine
Solar2D Game Engine main repository (ex Corona SDK)
Multi Theft Auto is a game engine
Open source voxel game engine with support for survival and crafting
The game engine for everyone
A game engine powered by python and panda3d
Real Time Strategy game engine supporting early Westwood classics
A complete 3-D game development suite written in Java
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Voxel game-creation platform with easy modding and game creation
A Flutter based game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
A modular Common Lisp game engine
Cocos simplifies game creation and distribution with Cocos Creator
Recreation of the classic Grand Theft Auto III game executable
Xash3D FWGS engine
Magic Another Game Engine
The Ren'Py Visual Novel Engine
Descent 3 by Outrage Entertainment
A game framework written with osu! in mind.
dhewm 3 main repository
Open source clone of the Age of Empires II engine
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
3D game engine/framework in C, with Luajit and Python bindings now