So I just bought a wii u mario kart 8 bundle and a copy of smash bros.
What other games are worth buying for this thing?
Splatoon is a good third-person shooter, Bayonetta 2 and Wonderful 101 are good options if you enjoy Devil May Cry-esque games, Mario Maker if you think you'll get a kick out of it, Wind Waker HD if you haven't played the original, and Pikmin 3 is fantastic.
Hyrule Warriors is a game that is only really enjoyable if you're a fan of BOTH LoZ and Dynasty Warriors. I didn't really know what I was getting into when I bought it and I hated it. I've never played Dynasty Warriors before.
-Mario 3d World
-Xenoblade Chronicles X
-FAST racing neo
-Yoshi Wooly world
Bayo 2, W101, Xeno are a must
DKTF comes Highly recomended as well.
Pikmin 3 was fun, not as good as 2, but fun none the less
3D World is a Mario Game, and it's pretty good also.