The group must be split into 4 teams and each team is given two pieces of paper - one with an X on and one with a Y. What the teams have to do is for each round they must submit either their X or their Y and points are scored as follows: XXXX (ie if each team gives their X) each score 10 points XXXY - X scores 20, Y scores -10 XXYY - X scores 0, Y scores 0 XYYY - X scores 50, Y scores -20 YYYY - all score 100 Set a score target at the beginning. For the first few rounds each team will inevitably submit their X, which is when you introduce the idea of negotiations. Each team can send one 'ambassador' around to the other teams to negotiate what letter to play next and try and get some significant points. See how the tables turn after that.