Though Nintendo were not at E3 in the same capacity as Microsoft, E.A., Ubisoft and Sony they did have a Nintendo direct released during it which served to highlight their plans for the future.
You can watch it on youtube below embedded below and individual games are linked after the jump.
[prebreak]Rest of the article[/prebreak]
There were quite a few games showcased here so I'll focus on the standout ones.
Because screw every other game, this is the only that matters here (well maybe Smash Bros too). There are fucking mechs. In an open world. With multiplayer. Awesome.
Super Smash Bros 3DS + U:
Mario Kart 8:
To the surprise of no one, Nintendo has unveiled a new Mario Kart. Aside from the leap into HD, there are several other changes in Mario Kart 8. One notable feature are anti-gravity sections in which racers can drive on both walls and ceilings. Hangliders and underwater racing from the 3DS outing and motorbikes from the Wii Mario Kart are also returning in this version. Coming out 2014.
Super Mario 3D World:
The next 3D Mario was revealed and is a notably lower-tiered affair than the usual entry. The gameplay is reminiscent of the levels found in the 3DS outing, Super Mario 3D Land with a number of changes. There's a "cat suit" in which Mario can claw and climb throughout levels as well as the addition of 4-player multiplayer (Mario, Peach, Toad, Luigi). December 2013 release.
Donkey Kong Country: Tropical Freeze:
To the lamenting of gamers everywhere, Retro's next game was not Metroid but simply another Donkey Kong entry (don't worry, Metroid is still coming...someday). That said, this looks quite similar to 2010's Donkey Kong Country Returns and if that was any indication, this should be a very solid title.
It's Bayonetta. On the Wii U. With a new haircut. And stuff.
Wind Waker HD : 1080p native visuals, sped up sailing, reworked Tingle Tuner with Miiverse
The Wonderful 101: Looks to be another stellar game from Platinum Games.
Deus Ex: HR: "I didn't ask for this". Actually that probably isn't appropriate here with improved boss battles, visuals and added content.
Splinter Cell: Blacklist: People still care about Splinter Cell?
Rayman Legends: Coming exclusively to the Wii U! ...Oh wait.
Art Academy Wii U:The Legend of Zelda: A Link Between Worlds
and more at the link.