http://www.gamesforthebrain.com/game/counterfeit/ I just spent the last 2+ hours playing this "game", you have to try and spot the differences between paintings. Its cool because it can be very hard... plus you get to look at some very interesting art. Anyways.. I got to 1000 "IQ" points before I called it quits... my whole head hurts now. This is very time consuming.. but I think its a lot of fun.