Ben 10 Galactic Challenge is a compilation of 20 Ben 10 Ultimate Alien games.
You can play with 10 Ben 10 Aliens: Ultimate Big Chill, Ultimate Cannobolt, Ultimate Echo Echo, Humungousaur, Jetray, Waterhazard, Spidermonkey, Brainstorm and Swampfire.
Try to finish both easy and hard versions of the game if you are a real player. Use the aliens's firepower and try to defeat all the enemies while making sure their ammo will not touch your body. The mini games are in fact made with Ben 10 Ultimate Alien Game Creator.
Have fun playing free Ben 10 Ultimate Alien Games Online and share this game with your friends!