Mario Kart 8 Deluxe: Booster Course Pass Wave 4 will be available on March 9, 2023. Watch the trailer to see the courses in Wave 4 of the Mario Kart 8 Deluxe Booster Course Pass, including Tour Amsterdam Drift, GBA Riverside Park, Wii DK Summit, Yoshi’s Island, Tour Bangkok Rush, DS Mario Circuit, GCN Waluigi Stadium, and Tour Singapore Speedway. Birdo also arrives as part of the Booster Course Pass Wave 4 as a new playable character.