I got a fun idea, what if we make some sort of special interactive Card Table brick with 4 seats around it? By clicking on a chair makes you join the game and you instantly sit down, you can leave before the round starts, if this table have atleast 2 or 4 players you can play a round of Uno (Why uno? That could be a way easier card game to code and implement compared to poker or others because it's just numbers and colors) the table could give the control for the first player who joined in to start the game once it gathers enough players, and then the cards could be items on their hands, max of 10, following the rules of Uno (search about the rules of that game in google or something, I'm sure someone here knows how it works) And to avoid cheating, all the players in the game are forced to play in the 1st person camera and they can't stand up or move around until the round is over.
What do you think?