There are 2 optical illusions in this. First the crystals change in 1 another. Its too fast to see it though. 2. start clicking the crystals to increase your score. But if you stop clicking... you'll see what happens! > : D I'm the master at optical illusions! I'll show you how to see the crystals. U got trolled. I'm gonna post ur surprised face : D. Here it is: U got trolled again!! ??
