The Wii is a home video game console developed and marketed by Nintendo. It was first released on November 19, 2006 in North America and in December 2006 for most other regions. It is Nintendo's fifth major home game console, following the GameCube, and is a seventh generation home console alongside Microsoft's Xbox 360 and Sony's PlayStation 3.

Because of Nintendo's reduced focus on computational power, the Wii and its games were less expensive to produce than its competitors. The Wii was extremely popular at launch, causing the system to be in short supply in some markets. A pre-installed game, Wii Sports, was considered the killer app for the console. Within a year of launch, the Wii became the sales-leader against the other seventh-generation consoles, and by 2013, had surpassed over 100 million units sold. Total lifetime sales of the Wii had reached over 101 million units, making it Nintendo's best-selling home console, and as of 2020, the fourth best-selling home console to date.