Top Thrill Dragster the world overtaking both world records from Steel Dragon 2000 at Nagashima Spa Land that was just built three years earlier. It lost the title of being the world's tallest and fastest roller coaster when Kingda Ka at Six Flags Great Adventure opened in May 2005. Intamin designed both Kingda Ka and Top Thrill Dragster, and the two share a similar design and layout that differs primarily by the theme and the additional hill featured on Kingda Ka. The ride had constant downtime in its first couple seasons. Several problems such as the ride's hydraulic system and launch cable caused
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