Ben 10: Alien Force
Select the "Enter Code" option at the "Bonus Content" menu. Then, enter one of the following codes at the
"Secret Cheat" screen to activate the corresponding cheat function. After a code has been accepted, you
must then turn on the unlocked cheat at the "Secrets" menu.
Enter Kevin, Big Chill, Swampfire, Kevin as a code.
Enter Swampfire, Gwen, Kevin, Ben as a code.
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Enter Ben, Swampfire, Gwen, Big Chill as a code.
Enter Gwen, Kevin, Big Chill, Gwen as a code.