Merry-go-rounds are indispensable attractions of funfairs, amusement parks and playgrounds. These devices have been reckoned to the canon of recreation appliances for a long time, as they keep being a favourite form of amusement for adults, and first and foremost, for children. The play on merry-go-rounds is always unique, because the devices rotate and turn, pleasantly swinging the users who occupy the seats situated on the platforms or fastened to the arms of the device by means of chains. The ride on a merry-go-round is a great experience every time, and causes a pleasant dizziness and tickle in stomachs. Modern rotating devices differ a great deal from the traditional merry-go-rounds. The new ones, unlike the old, have perfect workmanship, delight with their looks, and most of all, offer much higher comfort of ride and rotation speed. The latest merry-go-rounds either have the electric drive or are set in motion manually, by means of a lever. The devices powered by muscles’ strength became the place of sports team struggle and are treated as the equipment designed for competitive plays.