From the Super Mario Wiki
Twilight House is a battle course in Mario Kart DS. The house seems located in the middle of a forest, floating on a dark void though. The course has eight wide rooms surrounded by a narrow balcony. Players can fall to the void if they run along the balcony, especially on the 90 degrees turns. Some Dark Shine Sprites can be seen over the walls of Twilight House. Its name may been inspired by Twilight Town from Paper Mario: The Thousand-Year Door.The course reappear as a retro battle course in Mario Kart Wii.
Tournamentstournament. The battle course was changed into a race track, and players competed in a 5-lap grand prix race for the fastest possible time. The tournament was restricted to the Wii Wheel option, and was the 2nd tournament for July 2008. It was later repeated as the 2nd tournament for July 2010, with the exact same restrictions.
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