A few extra tidbits worth noting: you won't need a Nintendo Switch Online account for co-op, and this version has a couple of cosmetic exclusives – the Skyfighter Armor and the Skymetal Weapon Set.

Is Nintendo Online mandatory?

A Nintendo Switch Online membership is required to participate in co-op and competitive online features for many first- and third-party Nintendo Switch games, including Splatoon 2, Mario Kart 8 Deluxe, ARMS, and Super Smash Bros. Ultimate.

Do you need Nintendo online to play online?

A Nintendo Switch Online membership is required for uploading and downloading games and is sold separately. ... With the Nintendo Switch Online smartphone app, you can also voice chat during your play sessions. The service included 20 games at launch, with new NES and Super NES games added in the future.