Cheat mode:--- 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.
Level lord.-- Enter Gwen, Kevin, Big Chill, Gwen as a code.
Goop.-- Enrter Ben, Gwen, Kevin, Big Chill as a code. Alternately enter Ben, Swampfire, Kevin, Big Chill as a code.