Rampage: Total Destruction

Cheat mode:
Press L2+R2 at the Main Menu to display the code entry screen.
After enter one of the following codes

141421 - Unlock all monsters & stages
082864 - Unlock Demo mode with 2 random monsters
000000 - Unfit all active codes
314159 - Display game version
874098 - Unlock Instant demo mode with 2 random monsters
986960 - Invincible to military attacks
071767 - One hit destroys a building
667302 - Unlock View credits
667301 - Unlock View ending theme
667300 - Unlock View opening theme
271828 - All stages
011235 - All special abilities
000020 - ?
249020 - ?

Unlock monsters:
Amanda the Armadillo - Los Angeles, play with Kyle
Bart the Bat - Los Angeles, play with Kingston
Cal the Squid - Los Angeles, play with Kyle
Croc the Crocodile - Hong Kong, play with Rojo
Edwin the Invader - London, play with Wally
Harry the Yeti - Chicago, play with Marco
Icky the Echidna - London, play with Ralph
Jack the Jackelope - Las Vegas, play with Harry
Jill the Jellyfish - Hong Kong, play with Amanda
Joe the Wildman - New York, play with Natalie
Kingston the King Cobra - Las Vegas, play with Lizzie
Kyle the Cyclops - London, play with Kingston
Leon the Lion - Las Vegas, play with Ralph
Marco the Shark - San Francisco, play with Ralph
Natalie the Nautiless - San Francisco, play with Marco
Nick the Demon - Chicago, play with Harry
Rocky the Granite man - New York, play with Cal
Rojo the Bull - Chicago, play with Kyle
Shelby the Turtle - San Francisco, play with Lizzie
Venus the Plant - Hong Kong, play with Croc
Wally the Warthog - New York, play with Marco

Super-Unlockables:
Unlock Bubba - Unlock the other 23 of 29 bonus monsters
Unlock Eyegore - Win every challenge on every level in All Challenges Met
Unlock Philbert - Collect the PAR points for every level in Par Scores Met