Army Men: Sarge's War

# All weapons

Pause the game, then hold L1 and press Right, Circle(2), Triangle, Circle. If you entered the code correctly, a message will appear. Note: Only weapons normally available in the current level will be unlocked.
# Invisible mode

Pause the game, then hold L1 and press Up, Left, Right, Up, Circle. If you entered the code correctly, a message will appear.
# Slow-motion mode

Pause the game, then hold L1 and press Left, Down, Up, Right, Circle. If you entered the code correctly, a message will appear.
# Fish eye camera

Pause the game, then hold L1 and press Left, Up, Right, Down, Circle. If you entered the code correctly, a message will appear.
# Beagle holes, footprints, and burns

Pause the game, then hold L1 and press Down, Up, Circle, Triangle, Circle. If you entered the code correctly, a message will appear.
# Alternate fade

Pause the game, then hold L1 and press Right, Up(2), Down, Circle. If you entered the code correctly, a message will appear.
# Alternate lighting

Pause the game, then hold L1 and press Up, Right, Up, Down, Circle. If you entered the code correctly, a message will appear.