I work in game developing, and we have two games where we use Blender:
Jimmy Neutron (Game Boy Advance): in multiplayer race the animated backgrounds maked with Blender.
Jimmy Neutron 2 (Game Boy Advance): all levels maked with Blender (not modelling objects, only level excluders, enemies placing and setting parameters, object placing, powerup placing etc. Our Python script exports the datas to C source code.
If you can, look this games (Publisher: THQ).