In the currently-codenamed Project P-100, the Earth is under attack from a massive invasion of aliens, who're destorying towns, messing up the streets, and generally making a nuisance of themselves. Unfortunately, none of the existing superheroes are strong enough to take the aliens down alone - so they turn to people power instead. By surrounding a civilian on the streets, you'll unlock their special super hero ability, turning them from average Joe into, well, Viewtiful Joe. The more civilians you turn into super heroes, the more special abilites you'll unlock, letting you morph together into all manner of powerful weapons and objects capable of crushing the invaders.
With a wide range of super heroes on offer, you'll be finding (and creating) veritable goliaths of the super hero world to join your struggle, complete with names that'll strike fear into the heart of evil-doers who dare oppose them, such as, er, Bonzai Man, Vending Machine Man and Toilet Bowl Man. Using the Wii U GamePad, you'll be able to order your group of heroes to transform into a variety of giant forms - transformers style - too, letting you pull out platforms with a giant fist or using a giant bridge to cross parts of the environment.
Not much else is known about Project P-100 – it wasn't even shown at Nintendo's conference last week (although it arguably should have been), with it instead just being sneakily added to a list of games afterwards. There's no news of a release date or anything either, except that it should be out within the first few months after Nintendo's Wii U console launches. What we do have, however, is a trailer, which'll let you get a taste for the madcap super-powered mayhem yourself - which is more than we got for Game & Wario, anyway: