diablo-3nintendo-switch
I have been playing local co-op with a friend and now I finally purchased the nintendo online service.
Can keep playing local co-op while joining online games together? How?
More info.: we are locally playing on the same switch, we only have one copy of the game. My friend is playing with a guest account.
Yes, you can play Ultra Street Fighter 2 on the same Nintendo Switch console. For this, you'll have to connect your Nintendo Switch console to a TV. Playing in TV mode will allow you to connect USB controllers to play the game. You can also use left and right JoyCons for this. For Local Mode multiplayer, your friend should have his own Nintendo Switch console. You can get some more info on IGN's website or you can watch a video here on YouTube about how you can do it.
As of date, it's not possible to have multiplayer session just for local party.
However, it has party option which allows to play online multiplayer with your friends (as like you, your friends and bunch of other folks on the same server). You can see party option in bottom right corner:
As for accounts, on Nintendo game store's Doom page it is listed that:
Nintendo Account required. Online features will be free until the Nintendo Switch Online Service launches in 2018
So I think all players need copy of game and Online Service subscription.
Best Answer
It seems there's a generic way (i.e. not bound to a game) to play online with a local guest. When you're selecting the second player, you have to skip the profile selection part. There should be a button below the profile picture that says SKIP. This allows player two to be a guest.
When you select a profile for the guest, you will need an NSO subscription for each selected profile, or the family subscription, provided the profiles are on your list.
I found this method in a Reddit post, where they were trying to do this with Rocket League. In the comments it was confirmed to be possible, as well as several other people confirming it works the same for other games.