Kojima Productions' Yuji Korekado has stated for the record that Metal Gear Rising: Revengeance is not being considered for Wii U, and has offered a pretty flimsy reason as to why. According to the producer, the Wii U's biggest feature is the GamePad, which in his mind is not an actual controller.
"One of the strongest appeals of the Wii U is the GamePad," he told Eurogamer. "However, we've constructed Metal Gear Rising so you can fully enjoy the game on the controllers whether it's on the PS3 or the Xbox. So, currently we aren't thinking about Metal Gear Rising on the Wii U."
This excuse severely puzzles me. Leaving aside the existence of the Wii U Pro Controller, Korekado does realize the GamePad has all the functionality of a PS3 or 360 controller, doesn't he? It's got the twin sticks, the D-pad, all the face and shoulder buttons -- it basically is a traditional control method, with some extra features.
Rising's Wii U snub highlights a continuing problem with the Wii U -- developers seem to think the GamePad is a magical barrier that blocks normal videogames from existing. Between Borderlands 2's reason for not being on Wii U and this weak reasoning, I have to wonder how many developers have actually played with the machine.