I don’t even HAVE an iphone, but I’m lucky enough to have played this:
http://www.ancient-workshop.com/
On someone else’s. It’s excellent. If you are one of those hip trendy kids with an iphone, you owe it to yourself to get it immediately. It’s probably the best new puzzle / thinking game mechanic I’ve seen in ages, and the polish and presentation is just superb.
It’s a puzzle game where you have to get a frog from point A to point B by moving his legs from one water droplet to the next. If you think it sounds straightforward it isn’t.
The guy who made it taught me how to code properly, and he really knows his stuff. Given the quality of this game and the amount of drivel currently on iphone, it’s CRIMINAL that this isn’t yet the #1 selling game on there.
Seriously, give it a go.