This game is just like a crossword puzzle, but with numbers instead of letters. To start with, one number is placed in the puzzle board. Use that number to find another number in a perpendicular row or column. Scroll through the number list to the right of the game board until you find a number that fits. Then click once on the number to pick it up and click again to place it in the right spot. Play every number in the number list to complete the level and advance to the next. Puzzles become more challenging as you progress.