A format by Something Special.
10 contestants have been invited to a secret mansion, only to find out that they are actually participants of a mysterious game. Only one simple rule for this game is - “never do what the rule says.” The problem is, no one will tell them what the Rule is. They have to figure out the rule themselves by collecting dying messages and obtaining clues from the challenges. For the next 48 hours, only the ones who can evade from the death rules until the end to remain alive will win. (source: welcon.kocca.kr)