1) Same argument as ever. OpenGL is cross platform. This means you can reuse your engine for a mobile port of your game. 2) You take some of the graphic card c

1) Same argument as ever. OpenGL is cross platform. This means you can reuse your engine for a mobile port of your game. 2) You take some of the graphic card company engineers and put them into a room with game engine engineers. Valve had some spectacular success with this technique lately [0]. Unfortunately, this is not viable for Indies or Free Software devs, but only AAA games need the high end anyways. [0] http://blogs.valvesoftware.com/linux/faster-zombies/ http://blogs.valvesoftware.com/linux/faster-zombies/