Like a real roller coaster, this 1:48 scale roller coaster model plummets down hills, careens around turns, performs a loop, and twists through a corkscrew all under the power of its own momentum. Designed by a roller coaster engineer, the ride begins at the control area. A rotating spring lifts the train up the first hill, then releases the train, where it dives and rises into its second turn. The second hill provides enough potential energy for the train to continue smoothly around the loop and power it through its corkscrew. The kit consists of 464 pieces made of durable ABS and POM plastic. When fully assembled, it spans 4' 9" long by 15" wide and stands 25" tall. The included software allows you to to simulate riding conditions as viewed from any seat on the coaster and from any angle, providing you with real-time G-force readouts. Requires a PC running Windows XP or Vista. Requires four AA batteries. Ages 14 and up. 58" L x 15" W x 25" H. (10 lbs.)