After five months offline, the multiplayer servers for Mario Kart 8 and Splatoon will be going back online for the Wii U. In December 2022, a severe security vulnerability was found in some first-party Nintendo games on the 3DS, Wii U, and Switch. This caused the company to begin updating a number of titles, including older ones, which resulted in Mario Kart 7 being updated for the first time in 10 years.