Crytek's 'Kinect-enhanced' brawler Ryse is exclusive to the Xbox One. The game, previously confirmed as exclusive to Xbox platforms, is revealed for the Xbox One by a countdown on Crytek's site, which is set to end on June 10 - that happens to match up with E3 time.
The countdown also features the year 2013 in Roman numerals, perhaps pointing to the game being released this year for the new console. A blurb on the countdown reads, "Fight as a soldier. Lead as a general. Rise as a Legend," and the game is described as "controller-based gameplay enhanced by Kinect."
We'll have more details on Ryse for Xbox One as we learn them.