Fusion Kart

The Fusion Kart is a co-op, tank-like vehicle that is a prominent feature in Mario Kart Arcade GP DX. It appears only if either two players are playing in adjacent arcade cabinets and if they opt to play in co-op mode instead of against each other or if there are 4 players playing and they wish to split into pairs. When a player obtains the special power-up, via Item Box, an option to turn into the Fusion Kart is available. When both players use their item button in order to activate the Fusion Kart, the player teleports to the player with the special power-up and transforms into the Fusion Kart, with the game designating which player drives and which player shoots, in which the concept is very similar to the double kart concept from Mario Kart: Double Dash!!. The shooting player has an infinite number of Green Shells and can shoot in any direction, including sideways and backwards. The transformation is temporary; once the time is up, the two players split and resume driving as they were before. The shooting player faces the same direction as the driving player when the transformation ends.

When playing with 4 human players in Team Battle, the Fusion Kart also has a health bar, which depletes as it takes damage. The transformation will end early if the tank's health is depleted.