Retail (5)
3D World, Tropical Freeze, Bayonetta 2, Xenoblade X, Rayman Legends.

Digital (4)
Smash Bros, Mario Kart, Wind Waker, Fast Racing Neo.

VC
Mario Galaxy 2, Metroid Prime Trilogy.

Oh god this is going to be a tough list off of the top of my head, but I'll try.

Physical - ZombiU, NSMBU, Wii Party U, Mario Party 10, Wind Waker HD, Scribblenauts Unlimited, Wonderful 101, 3D World, Tropical Freeze, Mario Kart 8 , Hyrule Warriors, Bayonetta 2, Smash Bros, Captain Toad, Splatoon, Mario Maker (16 titles),

Downloadable/Digital Retail - Pikmin 3, NintendoLand, Shantae and the Pirate's Curse, NES Remix 1 and 2, Shovel Knight, Guacamelee, Unepic (8)

Virtual Console - Yoshi's Island, F-Zero, Golden Sun, Minish Cap, Zelda II, LttP, Kirby: Return Dream Land, Metroid Prime Trilogy, Super Mario 64, Donkey Kong 64, Mario 3, Super C, Kirby and the Amazing Mirror, Contra III (16)

40 titles in total. I'm 100% positive I've left out a good 10 or so downloadable and virtual console, I'll check when I'm home.

Physical: 14

Digital: 1

Indies: 8

VC: 2

9 games

Physical: 6
Digital: 1
VC: 1

I did this because I like making lists although I'm appalled by how much money I've spent! Wow! 56 games in total. Man o man, I've really had a great time with my little system that could.

13 physical retail -
Nintendo Land, Zombi U, Batman Arkham Origins, Assassin's Creed IV, Deus Ex: Human Revolution, Smash Bros, Mario Kart 8, Guitar Hero Live, Just Dance 2014, JD 2015, Donkey Kong Tropical Freeze, Bayonetta 1/2, Wonderful 101

15 Digital -
Legend of Zelda Wind Waker, Captain Toad, Kirby and the Rainbow Curse, Splatoon, Super Mario 3D World, Xenoblade Chronicles X, Super Mario Maker, NES Remix, NES Remix 2, Wii Fit U, Jeopardy, Scribblenauts DC, Game & Wario, Pikmin 3, Rayman Legends

9 Nindie's -
Guacamelee!, Stealth Inc 2, SteamWorld Dig, DuckTales: Remastered, The Fall, OlliOlli, Sports Ball, Bit Trip Runner 2, Little Inferno

19 Virtual Console
Super Metroid, Metroid Prime Trilogy, Metroid Fusion, Earthbound, Advanced Wars, The Adventures of LoLo, Child of Light, Super Mario World, Super Mario Bros 3, Castlevania, Castlevania II: Simon's Quest, Ninja Gaiden, Mighty Bomb Jack, Super Punch Out, Mega Man 3, Mega Man X, Balloon Fight, Salamon's Key, Punch Out

Physical:  8

• Captain Toad:  Treasure Tracker
• Hyrule Warriors
• Mario Kart 8
• Pikmin 3
• Splatoon
• Super Mario Maker
• Super Smash Bros.
• Yoshi's Woolly World

Digital:  4

• Donkey Kong Country:  Tropical Freeze
• Rayman Legends
• Super Mario 3D Land
• The Legend of Zelda:  The Wind Waker HD

VC:  16

• Advance Wars
• Earthbound
• Fire Emblem
• Fire Emblem:  Sacred Stones
• Golden Sun
• Metroid
• Metroid Fusion
• Metroid Prime Trilogy
• Super Mario Bros. 2
• Super Mario Bros. 3
• Super Mario World
• Super Metroid
• The Legend of Zelda:  A Link to the Past
• The Legend of Zelda:  Minish Cap
• Yoshi's Island DS
• Yoshi's Island:  Super Mario Advance 3

EShop:  1

• Child of Light

Total:  29

What happened? Was it not your type?

Physical games: 17
Digital that also exist as physical: 1
Download only: 12
Virtual Console: 20

4 physical retail: NSMBU, Nintendo Land, Black Ops 2, Project Zero 5

15 digital retail: Pikmin 3, Bayonetta 1 and 2, Captain Toad, Tropical Freeze, Mario Kart 8, Tekken Tag Tournament 2, Smash Bros, Yoshi's Wooly World, Wind Waker HD, Rayman Legends, RE: Revelations, Splatoon, Mario Maker, SM3DW

9 other digital games: FAST Racing, Trine 2, Runner 2, Swords&Soldiers, Edge, DuckTales, Toki Tori, Mighty Switch Force, Pullblox World

12 VC games: SM64, SMW 1&2, SMB 1-3, DKC 1&2, F-Zero, Super Metroid, Kirby's Adventure, Yoshi's Touch&go

The WiiU has such an awesome library of exclusive games