Maybe the Ghost game, although that's really just one playing and others helping tell where the ghosts are.
I think he actually meant the platformer, now that I've seen all the games in the above video.
From the 2nd player perspective, it feels a bit different. He wouldn't know to call the game a "Platformer", he's not enough of a gamer to know the lingo like that, so I'm not surprised he compared it to "Mario Party".
It's ironic that the only person I know in person who owns a PSVR is someone who usually only plays CoD and NHL all year round.