Fun Halloween Jigsaw is a free online puzzle game with 12 Halloween pictures. Start with the first one and unlock the next image each time you finish.
Choose the picture you have unlocked and pick your difficulty: Easy with 25 pieces, Medium with 49 or Hard with 100. Look at the picture at the start, then put all the pieces back together. Left click and drag to move each piece. Each picture is a little harder than the one before, and the fun grows with every new image. If you get stuck, do not give up. Start over or try another difficulty.