1. Download and install "DOP: Delete One Part 4" from your device’s app store.

2. Open the game to begin your puzzle-solving journey.

3. Tap the screen to start playing the first level.

4. Observe the image on the screen carefully and try to identify the hidden problem.

5. Use your finger to drag across the screen and erase part of the drawing.

6. The goal is to find the correct area to erase that reveals the hidden truth or solves the visual riddle.

7. If your erase action is correct, the level will be completed and you’ll proceed to the next one.

8. Some puzzles may seem simple at first, but many are designed to test your logic and creativity.

9. Use hints if you get stuck, but try to rely on your own thinking first.

10. Keep progressing through the levels, each offering a new and unique challenge.

11. As you advance, puzzles become more complex and require more critical thinking.

12. There is no time limit, so take your time to think through solutions.

13. Replay previous levels anytime to improve your score or revisit fun challenges.

14. Turn up your imagination and IQ to master every level.

15. Enjoy the satisfaction of solving tricky puzzles and sharpening your mind.