If you are looking for good Wii u games, then here some I suggested you should buy
Super Smash bros Wii U: its a really awesome choice for the Wii u because of over 50 characters, 8-player smash, Mewtwo DLC, and its HD graphics.
Mario kart 8: the really awesome graphics, DLC, it actually saved the Wii u and etc.
Bayonetta 2: awesome gameplay, the Nintendo Cosplay outfits, if you get Bayonetta 2, then you can play the first one too.
Super Mario 3d world: 4-player co-op
Rayman Legends: it has more levels, hand drawn graphics style, 5-player co-op, andd etc.
On the e-shop,you should get; Shantae and the pirate's curse, ducktales remastered,and definitely Shovel Knight.