Wii U promises PS3 and Xbox 360 levels of third-party support - many of the same types of games, in fact.
But there have been tech demos and there have been showreels (flaunting Xbox 360 and PS3 code). So which games have been confirmed for Wii U so far?
Confirmed:
Pikmin 3
Smash Bros.
Lego City Stories
Darksiders II
Ninja Gaiden: Razor's Edge
Batman: Arkham City
New Ubisoft FPS IP
New Ubisoft multi-sports family IP
Ghost Recon Online
Assassin's Creed
Rabbids
Probables:
Aliens: Colonial Marines (showreel - prototyped, considered)
Dirt (showreel)
Metro Last Light (showreel)
Tekken (showreel)
FIFA
Battlefield
Madden NFL
Possibles:
BioShock (Ken Levine was a talking head on video at Nintendo conference)
Zelda HD (one of the demos)
New Super Mario Bros. Mii (one of the demos)
Demos (hands-on impressions in Eurogamer's Wii U preview):
Chase Mii
Shield Pose
Zelda HD
New Super Mario Bros. Mii
Battle Mii