Double roller coaster, theme park roller coaster double version Double version of the Hill car park. Press PLAY to start, and then select PLAY ONE PLAYER single PLAY TWO PLAYER play or play with two people happy roller coaster. A player using the up and down arrow keys to move, the use of WS two key players move up or down. Control a roller coaster along the track of movement, avoid the dangers on the road, reaching the other side smooth.