Marble Rush - interactive marble runs. Interactive marble run set - Super Sky Tower Set XL300 E with 141 components, 1 motorised train, 1 electronic MarBall conveyor belt and 10 MarBalls (marbles). The motorised train triggers cool light and sound effects. Roll the MarBalls into the goods wagon of the motorised train to transport them to another section of the track. The electronic MarBall conveyor belt can be set at different angles and transports the MarBalls to the next level. Use the zigzag loader to roll the MarBalls into the goods wagon. Countless construction options and pathways with curves, ramps, secret passages, etc. Building and playing with the marble run promotes motor skills, creativity, spatial thinking and an understanding of the principle of cause and effect. Incl. coloured assembly instructions. Compatible with all Marble Rush sets to build huge marble run worlds. Child-safe battery compartment and automatic switch-off. Demo batteries are included.