Tournaments are like minigames for courses that Nintendo creates. There are two tournaments every month. One tournament was to do Grumble Volcano backwards in a Kart. Another tournament was collect all the coins on GCN Peach Beach. To access tournaments you need to go to either the Mario Kart Wii game, then go to the Mario Kart Wii Channel and select tournament or download the Mario Kart Wii Channel on you Wii. If you download the Mario Kart Wii Channel and there is a tournament, it will show a yellow checkered flag on the channel. There are also tournament rankings.