[1] In each episodes, the contestants aim to solve the Main Code to allow them to escape the room.

The last four contestants left in the room must compete in the Last Code match wherein they must solve a final puzzle, the last to do so is eliminated.

At the last episode of the first season, the winner was given the option to choose between taking the prize and end of story OR continue competing and stand to win double the reward prize should he/she emerge as the winner.

Unlike the first season of competing alone as an individual, it is now a team match.

This article related to South Korean television is a stub.