Mario Kart Channel

Mario Kart Wii allows players to install the Mario Kart Channel on their Wii console. The channel can work without inserting the Mario Kart Wii disc into the console, but to compete in races and time trials the disc is required. The use of the Mario Kart Channel allows for a number of options. A ranking option lets players see their best Time Trial scores for each track and compare their results to those of their friends and other players worldwide, represented by their Miis. Players will have the option of racing against the Ghosts of the best players, or improving their results gradually by taking on the Ghosts of rivals whose times are only slightly better than theirs. Players can choose whether they want to share their Time Trial Ghosts with the rest of the world, allowing them to match their skills against the "cream of the crop" whenever they want. The ability to download a random Time Trial Ghost is also available. Players can also manage and register friends using the Channel and see if any of them are currently online. Another feature of the channel are Tournaments, where Nintendo will, on a regular basis, invite players to challenges similar to the missions of Mario Kart DS. Players are also able to compare their competition rankings with other players.

WiiConnect24 / RiiConnect24
The WiiConnect24/RiiConnect24 features of this title cannot be used because Dolphin does not currently support them. Refer.