The version of this that works for a group: Put everyone who is playing in an order. The first three players start out in a room and have the rules explained t

The version of this that works for a group: Put everyone who is playing in an order. The first three players start out in a room and have the rules explained to them. Everyone else is forbidden to come in this room. After the rules are explained, you call in the fourth player, play the game, and then explain the rules and they get to participate on the next round as the fifth player (and so on) is called in. Everybody but the last person gets to play both sides, which makes it more fun. You can change the rules, to mess with people who already know the game.