1. Launch the Block Blast game on your mobile device to begin playing.

2. Once the game starts, you will see an 8x8 grid where the action takes place.

3. At the bottom of the screen, a set of cube-shaped blocks will appear. These are your available pieces.

4. Drag and drop the cube blocks from the selection area into the grid using your finger.

5. Aim to fill entire rows or columns with the blocks you place.

6. When a full row or column is completed, it will automatically clear from the grid, giving you more space and increasing your score.

7. Plan your moves carefully, as blocks cannot be rotated. You must fit them into the grid in their original orientation.

8. After placing a block, a new one will appear in the selection area. Continue placing blocks to keep the game going.

9. The game continues until there are no more spaces left on the grid to place any of the available blocks.

10. When you can no longer make a move, the game ends. Try again to beat your previous high score and improve your strategy.