Play Colorama!

Ok, so I got to IQ level 1420 before I started getting bored. I might go back to it later though. 😉 Colorama is a fun game in which you have to find the one block that is different in the two pictures. At first, the blocks start out very large and each level they get smaller and smaller, making it more difficult to find the off-colored block.
While you're there, check out the other games offered by the fun folks at www.gamesforthebrain.com