Study the picture that you see. Once you have a good image of it in your mind, press the square key 
to see the modified picture. When you are looking at the modified picture you will have a red square 
that you can move around. Highlight the image where you find a difference and press the X key. This 
will mark the picture with a yellow square. You can swap between the two pictures by pressing the 
square key again. Continue marking squares until you have identified 8 differences. Once you have 
marked the 8 spots, press the triangle key to see your results. The game keeps track of your time 
so you can compare your results with a friend. You can press the right bumper to turn on background 
music. Press the circle key to skip to the next picture.

Look at readme.jpg to see how to make your own images.  Email them to me at mathfacts@cox.net and
I'll post some of them on my site for download.  Have fun!

http://members.cox.net/mathfacts