I really like ultiplayer games on iphone:
High Noon - Just got it... its REALLY FUN!!! I cant miss a day without playing it
Cause of Death- really ACTION PACKED SUSPENSE game I swear its a crime game, its like a story like surviving high school but its better because you donbt make your own charecter. I swear once I was playing I wasnt breathing cause it was suspenseful!! And when you finish volume one you can either buy volum 2,3 etc or wait EVERY week for a new "episode"
These are two games i love the most Eliminate is also fun but i stopped playing it since it gets boring after having all guns and stuff