The recently announced New Super Mario Bros. U will allow five players to compete at once. I know what you're thinking: playing four players in New Super Mario Bros. Wii was chaotic enough! Rest assured, the fifth person on the Wii U GamePad can actually help everyone else's gameplay experience by manipulating levels.
We take a look at the new feature in our New Super Mario Bros. Wii U Preview:
"While up to four characters can be on screen at once in New Super Mario Bros. U, a fifth person can join in via the game's nifty Boost Mode. Boost Mode utilizes the new Wii U controller and allows players to place block platforms wherever they touch on the screen. If you only have two people playing, for example if you're a parent who's teaching your kid to play the game, Boost Mode would be perfect because you could put a platform over a gap to save a character from potentially falling through. More malicious players can also use Boost Mode to trap their friends in a rough spot, getting them killed, which is always humorous in a game like this."
Whether you use the Wii U GamePad to be nice or nefarious is up to you. Reading the rest of Leah's New Super Mario Bros. U hands-on preview, however, is not optional.