6. Mario Kart Wii. Launched 2008. 36.38 million copies sold.
This Mario-themed video game lets the player select a Mario series character to use in a competitive race that includes the use of items that boost the character or harms the opponent. The game was sold with a wheel accessory to be attached to the Wii remote for enhanced gameplay. Among games not bundled with the Wii, this game is the best-selling one.
