I am new to this forum and completely unfamiliar with all this. I just purchased a Wii U for my 10-year-old son who desperately wanted it to play super smash bros ultimate with his best friend. Unfortunately, we learned after purchasing the console that his friend has a Wii and not a Wii U. Does anyone know if and how my son will be able to play his Wii U version with his friend who has the Wii? Thanks for any help.