NitPiz is agame in Arena 39 on the 39 clues website. However it is currently getting fixed. Compare two almost identical photographs and pick out the differences before the time runs out. It takes a sharp eye to see the details! If you see a descrepancy in a photograph, simply click on it to point it out. It doesn't matter what picture you click on; clicking on one will circle it in the other. After you find all differences you move on to the next round. There are 4 rounds. Complete the 4th round, and you win.