Starting from level 17, you will be able to restore the train tracks that will link your farm to the rest of the world. Fix the train station to start sending out goods via train. Fill up the trains with goods from your farm. Each time you fill a box you will get coins and experience. If you manage to fill all the boxes, you will get a special reward: a horseshoe, some experience, and points needed to rank higher on the leaderboard.And if you manage to send the train earlier than when it is scheduled to leave by pressing the Send button, you will get a bonus in the form of even more points and experience.