Namco Bandai is making a sequel to Mario Kart GP, an arcade only Mario Kart racing game. Mario Kart GP 2 adds in two new characters, Waluigi from the Nintendo camp and strangely Mametchi, a Tamagotchi. There are new items in the game like the FLUDD water pack from Super Mario Sunshine and Tamagochi toys. For all of the hardcore Mario Kart players there are alternate hidden carts to find. See pictures of the special karts on the arcade flyer.