Mario Kart: Double Dash!! (マリオカートダブルダッシュ!! Mario Kāto: Daburu Dasshu!!?) is a racing game developed by Nintendo Entertainment Analysis and Development and published by Nintendo for the Nintendo GameCube in 2003. The game is the fourth installment in the Mario Kart series, following Mario Kart: Super Circuit from 2001. It was succeeded by the handheld game Mario Kart DS, which was released for the Nintendo DS in 2005.
Similar to previous titles, Double Dash!! incorporates characters from the Mario series and pits them against each other as they race on different, Mario-themed tracks. The game introduced a number of new gameplay features, most notably the inclusion of two riders per kart. Double Dash!! supports LAN play using the Nintendo GameCube Broadband Adapter, allowing 16 players to compete simultaneously. There are 20 characters to select from in total, with eleven of them being new to the series. A special item for each character has also been implemented.
Double Dash!! was generally well-received by critics; it attained an aggregated score of 87 out of 100 on Metacritic. Reviewers praised the graphics and the new gameplay features, but criticized the voice acting. It was also commercially successful, selling over 3.8 million copies in the United States, and over 802,000 copies in Japan.