You can choose one of the six pictures in Killer Zombies Jigsaw and then choose one of the three modes: easy with 25 pieces, middle with 49 pieces, or hard with 100 pieces.
This jigsaw puzzle has a lot of things to look at. In the options area, you can mix up the pieces, show a preview, toggle the borders, change the sound, hide the clock, and more. From the main screen, you can choose a collection and then a puzzle to play. Choose the amount of difficulty to start the game. Now comes the fun part, which is putting the puzzle together. Move the pieces by clicking and dragging them, then right-clicking a piece to turn it. If two parts fit together, you will hear a "click" and a small sound. When you've finished the puzzle and put all the parts together, you'll see a screen that says "Congratulations!"
Have fun and good luck!