X2
at Six Flags Magic Mountain* · Valencia · United States
Steel 4D coaster at Six Flags Magic Mountain in Valencia, California, opened 2002 as X (rebuilt and reopened as X2 in 2008). Built by Arrow Dynamics — the world's first 4D coaster with seats that rotate 360 degrees forward and backward independently of the track. 175 feet tall, six inversions, top speed 76 mph.