1. Select the vehicle: Once you start the game, you'll see a selection of cars and trucks to choose from. Select the one you want to use.

2. Start the race: To start the game, tap on the play button.

3. Drive up the mountain: Use the accelerator and brake pedals to control the speed of your vehicle. You'll need to drive up the mountain while avoiding obstacles and other vehicles.

4. Complete stunts: As you drive up the mountain, you'll see ramps and other obstacles. Use these to perform stunts and earn extra points.

5. Avoid crashes: Be careful not to crash your vehicle or you'll lose the game. Make sure to slow down when you need to and avoid hitting other vehicles or obstacles.

6. Upgrade your vehicle: You can earn coins by completing races and stunts. Use these coins to upgrade your vehicle and make it more powerful.

7. Keep playing: The game has multiple levels, each with different challenges and obstacles. Keep playing to unlock new levels and improve your skills.