It is a classic and fun set dominoes up on end automatically as is chugged across the floor. Fill the cartridge and start the train to lay your domino trail by pushing it down onto the dominoes. Attach the cartridge to the top of the train and switch the train on! Turn the train’s funnel to steer left and right. As the train moves forward, it will deposit the standing dominoes in a row. Reload the cartridge when empty, turn on the train and continue until you have used all the dominoes.