This is cheat for Ben 10 alien Force Games. At the “Bonus Content” menu, select the “Enter Code” option. Enter one of the following codes at the “Secret Cheat” screen to unlock the corresponding cheat option. Then, enable the unlocked cheat at the “Secrets” menu.

Invincibility
Enter Kevin, Big Chill, Swampfire, Kevin as a code.

Infinite Aliens
Enter Ben, Swampfire, Gwen, Big Chill as a code.

All combos
Enter Swampfire, Gwen, Kevin, Ben as a code to unlock all combos.