Select a monster image to start your jigsaw puzzle. Decide the difficulty level from simple, medium, or challenging to determine the number of pieces. Slide each puzzle piece to the right position on the board. Rotate pieces by tapping on them if they don't fit initially. Finish the puzzle by connecting all pieces to reveal the original image. Utilize the preview option for a help if you're stuck. Advance to the next puzzle by choosing a new image after completing the current one.