Your goal is simple. Take the elevator to floor 6. But this is no ordinary elevator... Who knows where you'll end up. A hotel, dungeon, hedge maze, a train? You must travel from floor 1 to 6, working out if each floor is valid or not. If a floor is not valid, you must press the emergency button and don't continue up, or you have to start all over again! How do you know if a floor is valid? If the elevator says you should be on a certain floor number, say floor 3, then any indication that you are actually on a floor of a different number is invalid! A floor will have numerical clues, and you must find and check each one before moving on to the next floor. These clues could be a written number on the wall or the number of objects in a pile, but they aren't always so simple.