Mario Party 6 is the sixth installment in the Mario Party series of board game-style party video games by Nintendo and is the third game in the series made for the GameCube and was released in Japan on November 18, 2004; in North America on December 6, 2004; in Europe on March 18, 2005; and in Australia on September 15, 2005. It is the first GameCube game to make use of a microphone add-on.

The GameCube is a home video game console developed and marketed by Nintendo. It was released in Japan on September 14, 2001, in North America on November 18, 2001, in Europe on May 3, 2002, and in Australia on May 17, 2002. It is the successor to the Nintendo 64 (N64) and the predecessor to the Wii. As a sixth-generation console, the GameCube primarily competed with the PlayStation 2 and the original Xbox.