Alexey Pajitnov, the inventor of Tetris, unveiled a concept called Dolphin Ride that features paintball-armed dolphins racing (and attacking) each other to hit as many targets as possible, while Wizardry developer Brenda Brathwaite showed off an actual game called OneHundredDogs.com, due to launch on February 29th.
ENGADGET: Interspecies gaming hits GDC