The Nintendo GameCube is a battle stage in Mario Kart: Double Dash!!.
The stage resembles a Nintendo GameCube. The Nintendo GameCube seems to be floating in space, and there are glass-made walls around the GameCube. This battle stage is tricky because there is limited space, and is nothing but a square. There are many item boxes in the middle circle of the Nintendo GameCube. There are also 4 double item boxes by all 4 corners. This battle stage is already on your list and does not have to be unlocked. A similar battle stage called Nintendo DS appeared in Mario Kart DS that had the players battling on top of a giant Nintendo DS which players can fall off of.