Mario Kart: Circuit Madness

Mario Kart: Circuit Madness, also known as Mario Kart 12 in Japan, is a kart-racing game exclusive to the Nintendo Venus. It is the twelfth Mario Kart game in the series. Much like Insanity and Halfpipe Frenzy, and X-Treme, Mario Kart: Circuit Madness uses HammerBro101 Wi-Fi Connection. The game once again has 16 racers on each track.

Roster
There are 26 returning characters, as well as 6 new ones: Boom Boom, King Bob-omb, Goomba, MC Ballyhoo, Nabbit, and Professor E. Gadd. The roster contains 11 of the 12 characters present in Mario Kart DS. R.O.B. is replaced by Koopa Troopa. Shy Guy, Rosalina, Diddy Kong, and Funky Kong are added to the mix.

Items
Mario Kart: Circuit Madness introduces three new items: the P-Balloon, Superball Flower, and Spring Mushroom. The game contains 13 of the 14 items present in Mario Kart 64. The Fake Item Box is replaced by its successor, the Ghost Item Box. The Bullet Bill, Poison Mushroom, Mega Mushroom, Bob-omb, Fire Flower, Blooper, Thunder Cloud, and POW Block (the last three of which have the same behaviors as Mario Kart X-Treme) are added to the mix.