Bowser's Castle (GCN) is the third course in the Special Cup in Mario Kart: Double Dash!!. This Bowser's Castle standardized the Thwomps' desgin (which was always different in the previous games in the series) and introduced Mechanical Bowser. Also in front of the Mechanical Bowser is a shortcut leaping to the other side and skipping a sharp turn. This can be a little hard to master at first for beginners. The Mechanical Bowser on this track is close to the end of the course. The Wii version is heavily inspired by this version.