Blender can make a 3D Game with Python: http://www.blender.org/features-gallery/features/

Is posible to make a simple hello world game there, its fully integrated with Sound, Physics simulation, GLSL, plugins for a lot of things (Networking and Web plugin included), good and professional workflow.

3D Platformer: http://www.youtube.com/watch?v=BGqyvX4P6Pg

Features Demo: http://www.youtube.com/watch?v=SjFGDcGcEjE

Panda3D its cool, but its not a Game Engine, its a bunch of Python Library where you can assemble a Game Engine, but its not fully and seamless integrated.

Ogre3D its like the same, its not a Game Engine, its just a 3D Graphics engine, where you can assemble a Game Engine, you have to code your own Sound for example.