Alidar

While PS3 exclusivity doesn't help, I doubt it would have sold much better if it was also on the 360.  Trying to sell a SRPG with an anime art style in North America?  On top of that it's a new IP, was going up against games like Gears 2, L4D, CoD, and Resistance 2, and had virtually no marketing.  It seems they had a low print run so those that want it are having trouble finding it, not that it matters because pretty much no stores but specialty game stores (ie GameStop) would even bother ordering any.

Game's awesome though.