Kingda Ka is a hydraulically-launched steel roller coaster located at Six Flags Great Adventure in Jackson, New Jersey, United States. Manufactured by Intamin and designed by Werner Stengel, Kingda Ka opened as the tallest and fastest roller coaster in the world on May 21, 2005, surpassing Top Thrill Dragster.
Goliath is a wooden roller coaster located at Six Flags Great America in Gurnee, Illinois. Manufactured by Rocky Mountain Construction and designed by Alan Schilke, the roller coaster features RMC's Topper Track design and opened to the public on June 19, 2014.