Considering Darksiders 2 is already on Wii U could be an enhanced port of Darksiders 1 (kind of what i'm hoping for)

Other possibilities are think back to maybe a year or 2 ago when i listing popped up on Amazon for a WiiU port of De Blob 2

They also did recently say they were interested in bringing Destroy All Humans back could be something from that series

I wouldn't mind a Legend of Kay sequel ,but thats doubtful.