For groups that are larger than 6-7 people, we offer the duel format in order to accommodate more players. This is where the game is split in half, and split into two 30-minute rounds instead of a classic one-hour game. You split your group up into two smaller teams and the game is split into two rounds of 30 minutes each. In the first round, Team A is trying to break into the room where Team B is playing, while Team B is trying to escape before Team A catches them. After this 1st round we re-set the game and the teams switch sides and play an additional 30 minutes. At the end of the game on team is declared the winner. The winner is determined by whoever escapes the quickest, or if no team escapes, it is whoever has completed the most number of puzzles.
