If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The alien invaders has found the earth accidentally, and they want to rob the rich resources on the earth. They are on average stronger than the humans on earth. For the survival of mankind, you are now playing as Ben 10 to combat the alien invaders to protect our city and plant. Now start your glorious mission!
Arrow keys to move.
A to launch magic.
S to shoot.
D to use the knife.