Despite the lack of a traditional press conference, Nintendo actually brought a broad range of titles to E3 2013. One such game was the recently announced Super Mario 3D World, a cooperative 3D platformer exclusively for the Wii U.
In Super Mario 3D World you work together with other players to complete a level. Each of the four characters -- Mario, Luigi, Peach, and Toad -- have their own special abilities. Luigi can jump higher; Peach can glide; Toad runs fast; and Mario was described as sort of an "all-around" kind of guy.
Thankfully, there was a group of us playing, so I was able to experience the full multiplayer blowout. The first level was more of your traditional 3D platformer. We hopped form platform to platform, up and down clouds that would go in and out of the mountain; it was your typical Mario level design, except in 3D.
The catch here is that your playing with three other players. Things can get a little chaotic, and somewhat clustered, with four players all heading in the same direction, fighting for the same coins, and looking to jump on the same enemies. Keeping track of your character can get difficult with all of the chaos happening on screen, but it's a fun experience playing with others.