Grab your friends for a marble race off in Q-BA-Maze Follow the plans provided or get inspired and create your own With three types of exit cubes and two different ways to connect the paths and possibilities are endless The ingenious pieces interlock in endless configurations while double- exit cubes keep you guessing which way the marbles will go Add the Bounce Stunt set to any Q-BA-Maze marble runs you already have and put the laws of motion to the test Set includes two cascade stilts a pivot trampoline and 10 marbles Cubes not includedAdd these stunts to any Q-BA-MAZE 20 marble runs you already have and put the laws of motion to the test!Bounce Stunts add-on set includes 2 Cascade Stilts 1 Pivot Trampoline and 10 Marbles Cubes not includedFun and LearningBuild your own marble runDevelops creative thinking