Empty the ink cartridge replace the ink cartridge turn on the train and continue to use all dominoes. After creating the domino route knock it down! Suitable for wood laminated or smooth surfaces. Manufacturered by Flying cars. It can make sounds and adjust the direction of movement and it's easier than ever to set up dominoes! We have 100 dominoes and two catapults that can be used to eject dominoes (other products do not have these) Install the cartridge on top of the train and then turn on the train! As the train advances it will place dominoes one after another.