Kingda Ka Kingda Ka Kingda Ka is a steel accelerator roller coaster located at Six Flags Great Adventure in Jackson, New Jersey. It is the world's tallest roller coaster, the world's second fastest roller coaster, and was the second strata coaster ever built. It was built by Stakotra, a subcontractor to Intamin. Riders have to be at least tall in order to be able to get on the roller coaster. The train is launched by a hydraulic launch mechanism to in 3.5 seconds. At the end of the launch track, the train climbs the main top hat tower, reaching a height of
Millennium Force lift and similar layout but has different restraints; it uses shoulder harnesses instead of lap bars. Leviathan opened at Canada's Wonderland in May 2012 breaking as well. Manufactured by Bolliger & Mabillard, it uses a chain lift instead of a cable lift. Millennium Force has one of the longest lines in the park, with passengers waiting over four hours when the ride debuted. The ride received positive reactions from visitors, many of whom said it was smooth and very comfortable. Others said, "It'll scare the daylights out of you". In its first six years of operation, Millennium Force had over