Open-source engine for Heroes of Might and Magic III
Multi Theft Auto is a game engine
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
3D Procedural Game Engine Using OpenGL
RPG Maker 2000/2003 and EasyRPG games interpreter
Animation Compression Library
A multi core friendly rigid body physics and collision detection lib
Urho3D Game engine
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Every creative journey starts with Unity Hub
A free 3D game engine to create games and realtimes scenes for Windows
C++ lightweight cross-platform game engine
A fork of dhewm3 with an emphasis on modernisation and vanilla Doom 3
RTSish Game Engine
Improved version of the X-Ray Engine, the game engine
A cross-platform 2D game engine
A 2D game engine and level editor
Cross-platform 2D and 3D game engine
Free and Open Game Programming Language for Windows and GNU/Linux
Blueshift is a cross-platform 3D game engine implemented in C++