1. Launch the Drag Racing 3D 2021 mobile game on your device.

2. Choose your game mode: Career Mode for solo progression or Dual Player Mode to race against another player.

3. In Career Mode, start with a basic car and participate in races to earn rewards and experience.

4. Use your earnings to upgrade your car’s engine, transmission, suspension, and more to improve speed and acceleration.

5. Tune your car to match your preferred racing style for better control and performance during races.

6. At the start line, tap the screen to rev your engine and prepare for launch.

7. Watch the countdown timer and tap at the right moment for the perfect launch.

8. During the race, manage your speed and gear shifts by tapping the screen at precise moments.

9. Win races to unlock new cars, levels, and customization options.

10. In Dual Player Mode, use the arrow keys or AD to control Player 1’s car.

11. Player 2 should use the NM keys to control their vehicle.

12. Compete against each other in real-time to see who has the fastest reflexes and best-tuned car.

13. Continue racing, upgrading, and tuning to become the ultimate drag racing champion.