So, I "tried" a few games, just to see what they're like..
Why would anyone want to play an FPS or TPS on touch based device? O_o
It's pretty clunky compared to using a controller.
Now, RTS's and RPG's seem to work pretty well.. I just bought and paid for a game called Battleheart, an RPG that hits all the right notes and makes good use of the touch screen, and an RTS called Anaomly Warzone Earth HD that sort of reminds me of Starcraft a bit (It's billed as a reverse tower defense game, but think of the escort missions in Starcraft and you'll have the right idea)
Anyone else play games on your mobile device?