Mario Party 8 (マリオパーティ8 Mario Pāti Eito?) is a party video game, the eighth installment in the Mario Party series, and is the first title in the series to be released for the Nintendo Wii. It is also the first Mario Party title to have the ability to use Mii characters. It was released in North Americaon May 29, 2007, in Europe on June 22, 2007, in Australia on July 19, 2007, and in Japan on July 26, 2007. It was originally released in the United Kingdom on July 26, 2007. However, some retailers were reporting that it was supposedly withdrawn from shelves because some copies included the word "spastic", which is considered a highly offensive word in the UK for referring to disability. Just one month before, Ubisoft had the PSP game Mind Quiz pulled from the shelves because of the same word. The game was eventually re-released in the United Kingdom on August 3, 2007 with the word now used "erratic" instead.
Like previous Mario Party Titles, Mario Party 8 features Mario series characters in which four human- or computer-controlled characters compete in a board game interspersed with minigames, and was developed by Hudson Soft and published by Nintendo. Mario Party 8 received mixed reviews, receiving a Gamerankings Score of 63%. Despite some of the mixed reviews, after it's release, the game sold 314,000 units in the United States in three days, making it the best-selling home console game in the country that month. As of May 2010, the game has sold 7.6 million copies worldwide and ranks #10 on the best-selling Wii games list.