I own a wii u and like my wii u. I'm the biggest Nintendo fanboy on this site. Except for ONE MINIGAME* in Nintendoland, I can't think of any games only possible with the two screen setup. Tons of games benefit from the second screen, but none require** it.

Please try and find examples proving me wrong. I haven't played every wii u game in existence. I kinda think Wario's game might have some but off youtube I couldn't find any.

*Minigame is the Yoshi's Kart thing. If both the TV and gamepad screen were setup like the DS, or just alternated while holding a button, the game would lose 99% of the challenge.

**I know Wii U games require the second screen a lot, but the core gameplay doesn't. A port to PS360, Vita, and/or DS would be very possible, even if it's a gimped version.

***I also know other devices have their own second screen abilities. However this challenge is about Wii U games that can be played with traditional game systems: dual screen handheld, touchscreen handheld, and traditional controller+tv. That's great that PS4 and Vita can emulate the Wii U, but really not the point.

SUCCESSFUL CHALLENGERS!

0. JoeTheBro: games utilizing the awkwardness of mentally mapping information from one screen to another. Only example is Yoshi's Fruit Cart in Nintendoland.

1. green_sky: games utilizing the awkwardness of trying to look at both screens simultaneously. Examples are the backpack in ZombiU and the minigame GAMER in GAME&WARIO.

Yes. Nintendo Games.

The title made me think of this:

No. Those also come to 3DS.

   ?

If you have 4 hands sure.

From top of my head. How would you play Luigi Ghost Mansion and Mario Chase without gamepad. Also bunch of games in Game & Wario. Particularly the very excellent "gamer" game. Most games do utilize it in some way but yea nothing really big as of yet.

The Last Story

Sony's Playstation Move can't replicate motions as well as Wii Motion Plus, I have both and the PS Move Wand is similar to the original Wii-mote.

Now you ask, Wii can play this, but Wii U adds functionality with the second screen. I could use the second screen to shoot arrows without changing what happens on the first screen.

...except with feedback latency

Vita.  Has console controls on it.  Four hands not required.