Do you have eye control?

As in can you see the difference in two pictures if you cross your eyes?
This site is a variation of the 'spot the difference' game.
It's made to be viewed with crossed eyes.
It does kind of get easier as you learn what to look for...but it's cool anyway.

Of course you could always do it the old fasiond way.
If you want to start over, you may want to delete that cookie to get the original version when you refresh.