Kingda Ka: Arms down, head back and hold on: the Kingda Ka may not be very long but it's bound to leave you wide eyed and twitching! Kingda Ka reigns supreme as the tallest and fastest roller coaster in the world at the Six Flags Great Adventure in Jackson, New Jersey. This ride towers high at 456ft tall with a 418 ft incline and a sickening drop at a sheer 90 degrees with a half twist. From a completely stationary position, KingDa Ka will catapult a cart to 128 mph in just 3.5 seconds. Crazy! But so cool.
