Roller Coaster Marble SlideSmartivitys Roller Coaster Marble Slide in a combination of a pool table and a roller coaster. A mix of slider game and pool table, this project is loads of fun to build and play. Follow the instructions in the manual to build the toy. Once built, a kid can raise marbles along the wheel, and release them. As the marble slides down the track, they can aim the marble with the help of levers on the two sides. On the marble pool part of the game, kids can