Round-up respectively roundup (in proper nouns also: RoundUp or Round Up) is an amusement ridecentrifugal force is enough to push riders against the wall. At that time, the friction between the riders' backs and the walls is enough to hold them against the wall. Then, the arm raises the horizontal platform to a vertical position in which riders, instead of spinning horizontally, are now spinning vertically. consisting of a circular horizontal platform with vertical cage like wall around the edge. The platform is attached to a motor on a hydraulic arm. The ride starts out by spinning until the

The ride spins for a predetermined cycle until an automatic timer releases the hydraulic fluid from the arm causing the platform to return to its horizontal position. The operator may be required to manually control the spin of the ride such that the ride's exit aligns correctly with the exit gate. Most Round ups require the rider to be at least 42 inches tall.

In the UK this ride is commonly known as the 'Meteorite' or 'Meteor'. The first such ride to arrive in the UK was with Rose Brothers in the 1950s and the ride came from Germany. Although Hrubetz examples exist in the UK other common makes include Cadoxton and Sam Ward.

The UFO consists of twelve, four-person gondolas, mounted in a circle around a central drive hub. This hub is in turn connected to a hydraulic arm. The ti is rotated to produce a centrifugal force sufficient enough to stick the riders to the wall of the gondala furthest from the centre. Once this is achieved, the hydraulic arm is used to move the entire ride from the horizontal position to near-vertical. The time between the ride beginning to spin and the ride reaching near-vertical is approximately sixty seconds. The ride must be lowered back to the horizontal position before the rotation can cease.

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Speed is an amusement ride design produced by the Dutch company KMG. It is commonly referred to as KMG Booster, due to its similarity with the Fabbri Booster ride.

It has become an extremely common ride on European funfairs, particular in the UK. This is due to a combination of the ride's spectacular visual impact, and its highly practical operation. The ride can be transported on only one trailer, and requires just three hours to build up.

The ride is primarily a 37 metre arm, connected midway to the main support of the ride. Two sets of two seats are mounted at the end of each arm, back to back. Each four-seat assembly can swing through 360 degrees.

The arm rotates at up to 13 revolutions per minute, producing an acceleration of 3.5 g on the riders. Riders should be 52 inches tall or more.

the kmg speed is small than the booster, but it is smaller and weighs less it is good for people who dont want to go on rides as big as the booster ect.