For iPhone and iPad, depending the circuit, touch the right part of the screen to turn right, touch the left part of screen to turn left.
To play on the Apple Watch, move the "Digital Crown" wheel. Try to make the fastest lap of the circuit!
For now 7 circuits and 20 cars to choose, all with different characteristics.
Do you want to compete against your friends? You can send the score obtained on the iPhone and Apple Watch to the Game Center leaderboard.
To submit the Apple Watch score to the ranking:
1- The iPhone and Apple Watch must be linked.
2- Play with the Apple Watch and before sending the score, open the app on the iPhone (It's important to open the iPhone app after playing with the watch). When you press "Send Score" from Apple Watch, a screen on the iPhone with the score will be ready to send.
Now you can know if you are the fastest player on the Apple Watch!