So I think I'm having an issue. Booting up MD2 on Switch at a party and we can't seem to get multiplayer working. I put in two credits and tried to get player two in, but the game doesn't seem to sense it at all. It's not the controllers because I tried swapping, and it didn't help.
There is a bug in these games where having any controllers connected to the switch messes up player 2 controller sync. Take off the controllers and it should work fine.
I sent them a bug report over a month ago, haven't heard anything back.