How good is the iphone at playing games?

Monkey M :
Can u hack into it and play say, super nintendo games or game boy games? How good would the controls be? Are there any cool applications for it if the iphone is hacked into?

blksvr :
I have an iphone and play games on it sometimes. It seems to be as good as any other phone, I like it. Plus, there are so many games to choose from these days.

Browns Fan :
Since the iPhone screen is bigger and can rotate, the custom games are far more enjoyable on the iPhone than any other cell phone. There are hundreds of free games that are designed specifically for the iPhone, so it's not worth hacking.