The long-awaited XCOM: Enemy Unknown has finally arrived on the App Store for a premium price of US$19.99. This is Firaxis' turn-based strategy hit from last year (in my opinion, one of the best games of 2012), translated to the iOS platform in full. The controls have been tweaked just a bit to work with the iOS touchscreen, but otherwise this is the full game, featuring a base that you can upgrade at will, soldiers that you can outfit with bleeding-edge technology and terrific turn-based skirmishes against aliens of all kinds.
The graphics, I believe, have been slowed down just a bit, and Firaxis does recommend that you use an iPad 4 to play (and they even say to turn off other apps that might take up cycles in the background). So that could be a pain, especially if you have an older device. Still, this is a modern PC game, and we're getting it here in full form on iOS, so it's hard to complain about that.
It's nice that this is a full premium release. You spend one price and get all of the game's content with no IAP or freemium twists at all. XCOM is a great game from a company that is well worth supporting.