Find the differences between the left and right pictures before time runs out. The faster you clear the level, the higher your score would be. The easiest way is to look close at the left picture and mark the differences at the exact locations. You must be precise with where you mark the differences. Having to click several times and getting it wrong will waste your time.

The game provides you with three hints to help you find differences you may be missing. If you’re ever stuck, try using them. Be careful, though. They flash by fast and you only get three through the entire game. Make them count.