I recently saw someone on the subway playing a fully 3D, high-speed game of Grand Theft Auto on his phone. Even I was surprised even modern phones can handle that kind of processing...
Yeah, they recently released San Andreas out for tablets. Impressive considering I just got caught up with playing the game this past summer on my PC!

Anyway, I don't like playing 3D games on my tablet. They're too big for the little space you have and use up too much battery power.