The Blender Game Engine is a component of Blender, a free and open-source comprehensive 3D production suite, used for making real-time interactive content. The game engine was written from scratch in C++ as a mostly independent component, and includes support for features such as Python scripting and OpenAL 3D sound.
A screenshot of a first-person adventure game made with the Blender Game Engine, Dead Cyborg. To see the game in action, go to Youtube.com
Finally something that looks semi-new!