Marble Rush - interactive marble runs. Interactive marble run set Marble Rush - Rocket Set M100 E with 74 components, an electronic sound and light module, and 10 MarBalls (marbles). Countless construction possibilities and pathways with curves, tunnels, spirals, ramps, secret passages (blocks with holes), and more. The rocket (electronic sound and light module) reacts with funny sounds and light effects when the marbles roll through, and it plays cool music during playtime. Adjustable launcher cannon that catapults the MarBalls upwards and in various directions. Horizontal launcher that shoots the marbles forward at high speed (e.g., to hit the target). Throw launcher with marble funnel that sends the MarBalls onto the track. Numerous interactive marble run elements such as a flag that is set in motion by the MarBalls, a target, and much more. Building and playing with the marble run enhances motor skills, creativity, spatial thinking, and understanding of the principle of cause and effect. Three cool background music tracks and many funny sound effects. Includes various assembly instructions. Compatible with all Marble Rush sets to build huge marble run worlds. Child-safe battery compartment and automatic shut-off. Demo batteries are included.