Wow! So much fun at the same time for the youngest train drivers.Wow! So much fun at the same time for the youngest train drivers. Start by building a track layout with the mountain blocks and the tunnel, and let your train go up and down and through the tunnel. Press the arrow button on top of the engine and the train starts to move by itself. The wagon with the spinning wheel makes it extra fun to watch the train passing by. For ages 18m+.