The rumours were correct: Nintendo 64 content is coming to Nintendo Switch Online. The same is also true of SEGA Mega Drive games, and controllers for both.
Also confirmed is an Expansion Pass membership for Nintendo Switch Online, which will seemingly be required to play these games.
Details are currently scarce, but we did hear that the pricier Expansion Pass membership upgrade will launch next month. This means that some N64 games — some of which will feature 4 player online multiplayer — will as well.