I own new super mario bros u, nintendoland, trine 2 and back ops 2. I wanted to get tekken as well, but the ps3 version was less than half the price, so I got that instead. I do prefer playing games on wii u though.
My next purchase will either be Aliens or Pikmin 3.

So far, I have:
Nintendo Land
New Super Mario Bros. U
Call of Duty Black Ops II
Trine 2
Mighty Switch Force Hyper Drive Edition
Ninja Gaiden III: Razor's Edge
Batman: Arkham City Armored Edition
The Cave

Next up will be Rayman Legends, Pikmin III, Wind Waker HD, and whatever else catches my eye.

I currently own Nintendo Land, Sonic and All Stars Racing Transformed, ZombiU, and New Super Mario Bros. U.

I plan on getting Rayman Legends, Pikmin 3, Game and Wario, Lego City Undercover, and everything announced in the Nintendo Direct.

none

but Pikmin 3 will be the 1st title purchased when i eventually get 1

The only game I have so far is Nintendo Land.
I'm sure the next game I get will be Rayman legends. The demo is awesome!

Nintendo Land
New Super Mario Bros. U
Zombi U
Assassin's Creed III
Mass Effect 3: Special Edition
Virtual Console - Balloon FIght

Out of the games I own now I'd say Nintendo Land and ZombiU are tied for being my favorite game on the system so far. I'll possibly be getting the Lego City game next, depending on how it looks closer to release. I know I'm definitely getting Pikmin 3 and Rayman Legends though.

Argh, double post. Sorry.

coming soon then that would be... Aliens..

Couple of months is Pikmin 3..

For this year? tbd... Galaxy 3!!

*The game for next generation?.....RETRO STUDIOS (Metroid or w.e)

** The game that I say deserves nomination last generation from the 3 main consoles would have to be Super Mario Galaxy 2.

Currently own:

ZombiU
Black Ops 2
Darksiders 2
Sonic Racing Transformed
Nano Assault Neo
Puddle
Chasing Aurora
Mighty Switch Force
Trine 2
The Cave

Next purchase:

Have just ordered Assassin's Creed III

i gotz Nintendo Land, NSMBU, Black ops 2, zombiu, and darksiders 2