Escape Room

Have you guys heard of it ? or tried one out? Escape Room is a mystery game that people pay to participate in. It is a actual room that is set up as a dungeon or a crime scene. People enter the room in groups. The room has clues hidden around in it and to be able to escape the room you have to solve the puzzles using the clues you find. It is sometimes used as a team building exercise. I have only ever heard of ones that last for 1 or 2 hours. This concept seems to gaining popularity as a recreational game for adults to play.