This app was mentioned in 2 comments, with an average of 2.50 upvotes
Describe it to whom? In what context?
Informally, any of those could work. "Social" is a bit vague and I would say it doesn't have a standardized meaning. "Party" may be a bit restrictive, for instance, if the game supports fewer players. What if it also qualifies as a family game?
In a more formal context, I would avoid using such tags altogether, as they may narrow the scope of the game unnecessarily.
By the way, I dig the idea. It reminded me of this game.