Here’s how the Ambidex Game works. Each player has a bangle attached to them and BP (presumably bangle points) increase and decrease. Only when your BP reaches nine you can escape, but if it reaches zero or lower you die. Just like Nine Hours, Nine Persons, Nine Doors players travel in groups, pairs to be specific, and the twist is you can betray each other. Before a game begins players enter their bangle in a computer and select either "cooperate" or "betray" without their partner knowing. If both players select cooperate they each get two BP. If they both select betray nothing happens to their BP. If one person picks betray and the other decides to cooperate, the betrayed player loses two BP and the traitor gets three BP.