Nintendo, today announced that Super Mario World 3D World is set for a December release on the Wii U. The game taps on the shoulders of Super Mario 3D Land on the 3DS for inspiration. However, this new Super Mario for the Wii U features 4-player multiplayer. Mario, Luigie, Peach and Toad all make appearances in the game. In addition, a cat-suit will permit players to traverse walls, and swipe at enemies with the suit's claws. Let's hope this italian has 9 lives.