Very, very, very fun. It's in a building next to a restaurant in Gangneung. If you don't know where to go, you can buy tickets online at any time and go in directly. It may be Monday or the fever has subsided, so there are not many people. There are 21 levels, all of which are very fun. Some are very difficult, and some are really tiring. You can bring water and mobile phones when you go in. You have to remember what time to go in. Even if it exceeds an hour, you will not be rushed. I don't know why~ It's fun to push it. It's really about playing for an hour, otherwise it's too tiring😆