Yes, I also like to use the Fantastic Beasts the crimes of Grindelwald. At the beginning each member of the group was given a task, but no one else in the room knew what the other's task was. The purpose was to not allow the enemy to know the plan and be confused. (Spoiler) One of the members joined the enemy side and we didn't know until the end that his task was to be a double agent. This is the purpose of game theory, to keep the enemy confused and away from the true plan.