Skies of Arcadia 2, or an awesome Sonic game that I feel I can't live without (Sonic: Lost World is not that game). Assuming that said games were Wii U exclusive, of course.
Another price cut would be important, but it wouldn't be enough. Even if the Wii U dropped to $100 tomorrow, I wouldn't pick one up until there was an exclusive that I felt was a must-have. Without that game, it would be a waste of $100.








