Sega Amusement Theme Park

I suppose it could be argued that you haven't experienced today's Japan unless you've visited at least one Joypolis, the reigning king of amusement arcades. This one, on the eighth and ninth floors of a shopping arcade complete with a Ferris wheel on top, overloads the senses with lots of flashing lights, bells and whistles, and throngs of squealing kids and teenagers. In addition to arcade games, virtual rides simulate gliding through the air or shooting the rapids of a wild river. Note: Children under the age of 16 aren't allowed here after 7pm and that some "rides" carry height restrictions, with rules enforced by what -- the joy police?