1. Open the game and choose a game mode: Classic, By Time, or Bombs.

2. Observe the 9x9 grid at the center of the screen where you will place blocks.

3. At the bottom of the screen, you will see three block pieces available to place on the grid.

4. Touch and drag one of the pieces to the grid. Fit it in a way that helps complete full horizontal or vertical lines.

5. Once a full row or column is completed, it will be cleared from the grid, and you will earn points.

6. In Classic mode, keep placing and clearing blocks to score. The game ends when no space remains to fit a new piece.

7. In By Time mode, a timer counts down. Clear rows or columns that include a Time power-up to increase your remaining time.

8. In Bombs mode, some blocks on the grid contain bombs. Clear the rows or columns with bombs before the countdown on them reaches zero.

9. Use rotate and flip options wisely to adjust the shapes and fit them better into tight spaces.

10. The game continues until you run out of space (Classic), time (By Time), or allow a bomb to explode (Bombs).

11. Try to plan ahead, clear multiple lines at once, and beat your highest score.