Wordament, a word puzzle game now available on iOS, is the first Xbox title to port to iOS with Xbox Achievements, according to a post on the game's blog.
Wordament gives players two minutes to guess as many words as possible against other players in real-time. Players can sign into their Microsoft account and earn up to 10 achievements worth a total of 50 points. Additionally, signed in players will have access to all of their Xbox friends and Wordament Frenemies.
You can pick up Wordament for iOS now through the iTunes store. The game is available for iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch 3rd generation or later, and iPad. It requires iOS 4.3 or later to play.