Marble Rush - interactive marble runs. The interactive marble run set Marble Rush - Ultimate Set XL100 E includes 126 components, 2 electronic modules (motor module and sound & light module), and 10 MarBalls (marbles). It features countless building options and pathways with curves, tunnels, spirals, ramps, and secret passages (bricks with holes). The motorized Ferris wheel automatically picks up the marbles and transports them to the next level. The sound & light module with a funnel reacts with funny sounds and light effects when the marbles roll into the funnel and plays cool music during playtime. An adjustable launcher cannon catapults the MarBalls upwards and in various directions. A horizontal launcher shoots the marbles rapidly forward to roll up steep track sections. The marble funnel allows the MarBalls to roll onto the marble run. Numerous interactive marble run elements are included. Building and playing with the marble run enhance motor skills, creativity, spatial thinking, and understanding of cause and effect principles. It comes with various building instructions. There are 4 cool background music tracks and many funny sound effects. Compatible with all Marble Rush sets to create huge interactive marble run worlds. It features a volume control, child-safe battery compartment, and automatic shut-off. Demo batteries are included.