You have 5 tiles to choose from, drop them in front of your train so that it can keep going. Make sure you plan ahead, so you don't end up running into a mountain or your own tracks!
There are stations throughout the world. Visit one, and you'll get a fireworks celebration, and an extra reroll!
There are two leaderboards to compete on: Biggest Score and Largest Loop. Decide if you want to try to go as far as you can, or loop back to where you started!