I can count more than 25 iPhone games that are better than some Nintendo DS and PSP games that sell for 20 or 30 bucks! Here's what's playing on my iPhone.
Rolando: This stylish puzzle adventure has you rolling little ball people around a colorful world. In fact, it's probably the best game on the iPhone to date. Play it.
I Love Katamari: Rolling up a big pile of garbage might not sound like fun, but this game definitely cleans up. Speaking of which, Namco needs to update the tilt controls a little before this good game becomes great.
Flight of the Hamsters: It seems simple enough--launch a hamster and see how far it'll go--but this game is amazingly addictive.
Amateur Surgeon: Here's a goofball cross between Operation and the DS's Trauma Center: Under The Knife.
Touch Physics: This rip-off--ahem--tribute to the indie game Crayon Physics has you drawing shapes to solve puzzles. I'm playing this until the real deal comes to the iPhone.
Sim Cities and Strategies
SimCity: It's SimCity, and it's in the palm of your hand (technically, it's SimCity 3000, but you get the idea). This spot-on re-creation operates surprisingly smoothly, providing everything from advisors to disasters--all that you'd expect from the classic PC game.