In Ben 10 Alien Differences game you have to spot the differences between the 2 images. This Ben10 game is challenging because you have to know Ben 10 aliens so you can spot the differences. Some of Ben 10 aliens included in this game are: Echo Echo, Humungousaur, Spidermonkey, Jetray, Ultimate Swampfire, Gwen and more. Do you think you can find all the differences?