Caveats - I did not (usually) play the entire game. Mostly I was just running through the first 15 minutes to test basic compatibility. "Runs well" only means that I did not notice any performance problems, it is not a guarantee that you will enjoy the game play mechanics.
3D Bowling - Runs Well
Age of Zombies - Runs Well
Angry Birds - Runs Well
Angry Birds Space - Runs Well
Anomaly Korea - Runs Well. I think there may be some framerate dropping during heavy fighting in later levels, but I do not remember it degrading my enjoyment of the game, which I did play all the way through and enjoyed.
Apparatus - Runs well
Asphalt 7 - Runs with slow frame rates, long load times, controls seem laggy
Air Attack HD - Runs Well
Broken Sword - Runs Well
Chess by AI Factory - Runs Well
Cordy - Runs Well. Good platforming game.
Cut The Rope Experiments - Runs Well
Deadtrigger - Runs well
Doodle Jump - Runs well
Dungeon Defenders Second Wave - Runs well. Controls seemed difficult at times.
Epic Citadel - Not a game, but a cool tech demo that runs well.
FieldRunners HD - Can't access bottom row of game grid to drop armaments, which is a shame. I played through most of this title on my old Atrix 4G.
Flick Soccor - Runs Well
Grand Theft Auto 3 - The options allow you to decrease the draw distance and "resolution". The defaults work ok but scaling back on the quality will increase the framerate.
Great Little War Game - some loading lag, does not affect gameplay.
Gun Fu Stickman Edition - Runs Well
Guns 'n' Glory - Runs Well
Ionage - Runs well
Iron Man 3 - Lots of lag in menus. App crashed during action.
Landrule - a little laggy, but game plays ok
Minecraft PE - Runs Well
Mini Motor Racing - Runs Well
Max Payne - Runs Well
MX Moto - Runs Well
Nun Attack - Runs Well
NOVA 3 - Campaign framerate seems a little low (in the 20s?), but is playable. Did not try multiplayer.
OnLive - This works, but I was only spectating, which still feels like living in the future.
Raging Thunder - Runs well. Graphics aren't fancy, but action seemed smooth.
Rebuild - Runs well. Turn based zombie strategy.
Roll in the Hole - slight delays on loading, but otherwise runs well
Samurai Vengeance - Runs Well
Sentinel 3 - Runs well. I've played this for hours and still enjoy it.
Shadowgun Deadzone - I didn't notice any framerate problems, but the on screen controls were difficult to use. This would be more fun with a gamepad.
Superbrothers Sword & Sworcery - Runs ok, some stutter in the music
Sympthony Of Eternity - Runs Well
Tank Riders - Runs Well
Word of Goo - Runs well
Vector - Runs Well
Zenonia - Runs well, controls were confusing
I was surprised that games like GTA3 and Max Payne were totally playable, but holding a tablet and using onscreen controls for an action game can get tiring. I mostly enjoyed things like tower defense where you can pause the action or not interact with the screen constantly. If I was going to play something like GTA I'd probably stick with my PS3 or PC for that.