Multi Theft Auto is a game engine
Solar2D Game Engine main repository (ex Corona SDK)
Descent 3 by Outrage Entertainment
3D Procedural Game Engine Using OpenGL
Recreation of the classic Grand Theft Auto III game executable
Modified source engine (2017) developed by valve and leaked in 2020
Urho3D Game engine
Mini game engine for games104
A fork of dhewm3 with an emphasis on modernisation and vanilla Doom 3
Improved version of the X-Ray Engine, the game engine
A 2D game engine and level editor
A cross-platform 2D game engine
Portable game engine with main focus on point-and-click adventures
Game engine for playing tomb raider 1 - 5 levels.
scriptable game engine with built-in support for 2D graphics and sound
3D Game engine
Tactical, turn-based game engine, that uses OpenGL and WinAPI
WGFX 2D Game Engine