1. Pokemon Sun & Moon
Huge improvement over Gen 6, trials are a nice change of pace, the new Pokemon are pretty good, setting is great and I like the new focus on story and characters. Other than it's just Pokemon.
2. Super Mario 3D World
This game is so good that is should be illegal, by far the biggest highlight of the Wii U's library. It looks great, there are tons of levels and they are all great, you have choices of playstyle, the new power-ups are great and even multiplayer is really good. Style and substance.
3. The Legend of Zelda: A Link Between Worlds
ALTTP in a fresh coat of paint with some new bells and whistles that introduces new gameplay styles and dimensions. The great thing about ALBW is that it builds on the base of it's predecessor to make ALBW feel unique. Really they could have just made a remake or remaster of ALTTP but they didn't.
4. Super Danganronpa 2
A visual novel that is often compared to the Ace Attorney series but what makes it stand above AA for me is the overall better characters and gameplay which gives it some replayability.
5. Metal Gear Solid V: The Phantom Pain
While this game is pretty controversial for numerous reasons, it also introduced a lot of cool ideas and it was an overall blast to play. The amount of options and variety that you have at your disposal is insane.
Honourable mentions that didn't make the top 5:
-Dragon Quest Builders
-Dark Souls III
-Bloodborne
-Super Mario Maker
-Fire Emblem: Fates
-Rabi-Ribi
