Cross-Platform C++ 2D/3D game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Voxel game-creation platform with easy modding and game creation
Free game engine for development of desktop, mobile, and web games
3D game engine with lua scripting
3D game engine/framework in C, with Luajit and Python bindings now
3D Game engine with editor
A free 3D game engine to create games and realtimes scenes for Windows
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
3D C++ Game Engine - yet another open source game engine
Cross-platform 2D and 3D game engine
2d/3d Game Engine
A Lua Game Engine
A complete 2D Game Engine with built in drag and drop editor
RPG Games without coding!