Description: Update: WOW Concentration is now free! Concentration, the famous tile-matching game is a fun way to while away time while you're waiting for the bus, stuck in an airport or avoiding the boss at the office. We've taken this idea and made it better ... much better! BANG! Studios proudly presents the iPhone Concentration Series for the iPhone and iPod Touch, where the more tiles you remove, the more of a terrific picture you see! World of Warcraft (WoW) Concentration, Alliance Edition includes seven fantastic art pieces showing the best of the Alliance -- Humans, Night Elves, Dwarves, Gnomes, and yes, we even slipped in a great piece of Arthas, the Lich King himself -- as well as a picture of the new Alliance class, the Worgen, which will appear in the Cataclysm expansion!