Mario Kart: Double Dash!!

Screenshots:

Fanart:

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Background:
It's Mario Kart tag-team style, with one character behind the wheel and the second chucking turtle shells, banana peels, and whatever else comes along courtesy of those spinning, question-marked power-up containers. You can switch drivers on the fly, and there's a whole new layer of depth to the combat-racing metagame.

Gameplay:
Players race as their favorite Nintendo Charecters. Do anything to make it to first place or stay in first place. Use items and weapons to take down your opponents. Mix and match both charecters and the kart wisely and make for the perfect racing team.