plants vs zombies

to be honest im not a fan of this game but i thought it would be good research because a know alot of other people are drawn to it so maybe I can learn this factor and add it to my game

what makes a iphone game unique?

I think a iphone game has to have a unique name and also a easy to identify image for the icon so when people come across it they will want to read the information that is shown when a person touches the icon representing the game on the apple app store.