Koopa Kart: Double Trouble!!



Koopa Kart: Double Trouble!! is the fourth installment in the Koopa Kart series and the first installment to be made by HammerBro101 Incorporated. It was released for the Nintendo Gamecube in September 2004.

Items
Koopa Kart: Double Trouble!! introduces twelve (technically ten) new items: the Green Paratroopa Shell, Paratroopa Shell, Heart, Spiny Shell, Buzzy Beetle Shell, Blue Shell, Yellow Shell, Bowser Shell, Giant Banana, Fireball, Chain Chomp, and Bob-omb, all of which are Special Items. Also, the first eleven only appear in this game, while the twelfth one goes on to appear in every installment since.

Racers
Because of the two racers per kart mechanic, there are twenty-four characters, with fifteen returning characters and nine newcomers. Like in Super Koopa Kart, all characters are available from the start.

Trivia

 * This is the last Koopa Kart game to feature just new tracks, as starting from the next Koopa Kart game, there will be retro tracks alongside the new tracks. It is also the last Koopa Kart game where Hammer Bro and Dry Bones are heavyweights and Monty Mole, Shy Guy, Spiny, and Buzzy Beetle are middleweights. The first one will become a middleweight, while the remaining five will become lightweights.
 * Starting from this game, Lakitu is a middleweight.
 * This and Super Koopa Kart are the only Koopa Kart games without any unlockable characters. Similarly, this is the only Koopa Kart game to feature more characters than it does courses; there are twenty-four characters in this game and only sixteen courses in this game.