Mario Party 8 is a video game for Nintendo's Wii. It is the tenth in the series and the first to be released on the Wii.

Gameplay - During the standard game, four different characters compete on one of six themed boards. When playing with fewer than four people, players select which characters the computer will control, as well as their difficulty level and handicap. Players take turns rolling dice and moving across the game board, with the goal being to amass as many stars as possible within the alloted turn limit.

Towards the end of the game, during the last five turns, gameplay is altered slightly. This can include events such as coins being awarded to the player in last place, as well as additional coins being placed on each space. After the game has ended, three Bonus Stars (which can be enabled or disabled as a game option) may be awarded to players for various feats during play. Finally, the player with the most stars is declared the winner, with the number of coins possessed used as a tiebreaker.

Additional game modes allow players to directly compete in minigames without making use of the game board. Several of these modes tie a number of minigames together, with each minigame won moving the winning player closer to victory.