You came to visit his friend. He recently moved to a new home. It is huge in size, there eleven rooms. Your friend went somewhere and locked you inside. All anything, but it is not for a couple of hours. He said that somewhere there is a spare key. You should try to find it, because your parents have begun to worry, because you are away. The house is equipped with traps and puzzles, so the robbers could not find a way out.