As of July 2015, the most recent game in the series, "Mario Kart 8," is playable online. Other "Mario Kart" games, such as "Mario Kart DS" and "Mario Kart Wii," were previously playable online.
"Mario Kart 8" gives players the opportunity to race online against other players around the world. Features include racing with up to 12 competitors, voice chatting between races and customizing tournaments with different settings. Other "Mario Kart" games with online capabilities were "Mario Kart DS," released in 2005 for the Nintendo DS, and "Mario Kart Wii," released in 2008 for the Nintendo Wii. Both games were playable online with a Nintendo Wi-Fi Connection, a service which was discontinued in 2014.