From the ChAIR/Epic PR rep:
Taking handheld gaming to new heights, the graphically intense “Infinity Blade” is powered by Unreal Engine 3 and features adrenaline-fueled sword battles and epic boss fights set in the realm of a fully 3D castle. The game’s robust single-player mode features an intuitive combat interface and simple touch controls which enable hardcore and casual gamers alike to engage in fun, furious battles. As play progresses, players gain experience, build stats and earn more powerful items to prepare their knight for the final encounter with the game’s nemesis, the God-King. Additional content will be released free of charge via planned updates, including a fully integrated multiplayer mode, which enables players to find friends and other challengers to battle online via Game Center.