The game is currently available on Steam, but Atlus promises their version won’t be a straight port. Zeno Clash: Ultimate Edition has cooperative tower challenges, new modes, features, and other (unannounced) improvements from fan feedback.
An interesting pick up. Zeno Clash is far from the average Atlus game. Perhaps, they are testing other genres and looking at porting indie games like Trine over other digital distribution channels. Zeno Clash: Ultimate Edition is slated for March 2010 on Xbox Live Arcade.