Warning ... the game is NOT complete. It is actually a project for YOU to finish. The idea is when you click the "Eyes Button" sprite, it should send a message to the "Eyes" sprite so that is will change its costume. Keep doing that for each button and each of the sprites until you have a complete Mr. Potato Head that lets you and make new faces. For extra credit, add more eyes, noses and mouths.
If you want to play the full game, go to http://scratch.mit.edu/projects/648989