Tags: Amusement Park Attraction, Roller Coaster.
Extremeroller was a steel stand-up roller coaster at Worlds of Fun in Kansas City Missouri. It was built by Arrow Dynamics and the first stand-up roller coaster in the United States. It was built in 1976 under the name Screamroller. In 1983 Arrow designed a stand-up train for the attraction which was subsequently renamed Extremeroller (also known as EXT).