Level select:
     Press  and hold L1 + L2 + R1 + R2 + Left + Circle + Select at the
new game Stamper menu

Cheat Code entry screen:
     Press  and  hold  L1  + L2 + R1 + R2 + Left + Circle + Triangle +
Square and press X at the options Stamper menu.

Cheat codes:
     Enter these at the cheat codes screen.

TANKODOOM            Invulnerability 
FEATHER              Low gravity 
WEAKROBOT            Megashoot 
TINYTINY             Little Tiny 
FMVAAA               View Dead River Canyon Intro FMV 
FMVBBB               View Mortar-Villa Airfield Intro FMV 
FMVEEE               View Desert Robo-Train Intro FMV 
FMVGGG               View The Nanometal Mountain Intro FMV 
FMVIII               View Atmospheric Reduction Center Intro FMV 
FMVJJJ               View Magneto Synchrotron Transporter Intro FMV 
FMVMMM               View Mount Mutank Intro FMV 
FMVNNN               View The Rail Gun Launcher Intro FMV 
FMVPPP               View The Maze Intro FMV 
FMVSSS               View AndNow FMV 
FMVTTT               View Appaloosa Interactive FMV 
FMVUUU               View Game Over FMV 
FMVVVV               View Ending FMV 
FMVWWW               View Tiny Tank Music Video FMV 

Cowboy Hat:
     When  you kill Big Bart in the first level his hat will be laying
there waiting to be put on. If you get killed you will lose the hat.

Easter Eggs:
     If  you listen to the first six "intro" sounds in the sound test,
listen  for  a  few seconds after the instructions and normal reports.
You  will hear Tiny give you random useless facts ("Poison Arrow frogs
are the world's most poisonous animals"), a "special voice mail from a
very  special  little  girl,"  and  a  hilarious recording of the game
testers singing Tiny's "Tiny Boy" ending theme song.