America

1. flOw
2. Mortal Kombat II
3. Tekken 5 Dark Resurrection
4. PAIN
5. Warhawk
6. High Velocity Bowling
7. Super Stardust HD
8. Calling All Cars
9. Aquatopia
10. Everyday Shooter

Europe

1. Tekken 5: Dark Resurrection
2. Warhawk
3. flOw
4. LocoRoco Cocoreccho!
5. Mortal Kombat II
6. Super Rub a Dub
7. Calling All Cars
8. Gripshift
9. Lemmings
10. Super Stardust HD

Bot flOw and Mortal Kombat II came out at the right time: when the PS3 was new, people wanted to try out buying a download, and there wasn’t much else to choose from.

If you haven’t tried LocoRoco or Super Puzzle Fighter yet, I would give those a look. Those didn’t get as much buzz as the other titles, but I think lots of people would love them.