Puzzles Forever includes a collection of jigsaw puzzles with amazing images. The trial version includes 6 images and you can also import your own. You can define the difficulty level by dragging the arrow, which can go from to 4 pieces to 900 pieces, depending on the image you choose. There are also 4 types of piece shapes available and you can enable the pieces rotation to make the game even more challenging.
What is more, you can also choose to show the picture, a whiteout, and a glass to put the pieces in. You can also select the pieces size, zoom in an out, and you can choose to see all the pieces, the edges only, or the non-edges only. Once you've selected a puzzle, you can redefine it and all the puzzles are automatically saved, so you can resume from where you left them. Sadly, the puzzles are not timed and there are no hints. The program has simple sounds, but no music, which is really a shame.
In short, if you are looking to play nice jigsaw puzzles and even crete your own, Puzzles Forever may be a nice choice.