One of the biggest games of the year—Tom Clancy's new Splinter Cell: Blacklist—takes players right into Guantanamo Bay prison camp to torture an inmate—and then lets them "decide to spare or kill their interrogated target."
It's pricey at a tenner per download, but anyone who's played Splinter Cell Conviction on the iPhone can vouch for the quality of the Xbox 360 port.
There are games where you blast, and there are game where you sneak. The iPhone has a wide selection of the former, but real stealth games, not so much. Splinter Cell, then, is more than welcome to the App Store.