From the Super Mario Wiki, the Mario encyclopedia
Moonlit Midnight is a battle arena in Super Duel Mode, an extra mode in Mario Party 5. The arena takes place in an area, surrounded by a forest. A pond is in the center of the stage and vehicles can dip in the pond. It takes place at night, where Stars are visible in the sky. As with all arenas, except Random Ruckus, it can be played only on Vs Mode.