Go to the options menu, and select the "Cheats" option. Then, press Y, and enter one of the following cheat code phrases to activate the corresponding cheat option. Note: Enabling a code will permanently prevent the game from being saved and achievements from being earned.

Lewis and Clark

Enter "YOU GOT YOURSELF A FINE PAIR OF EYES" as a code phrase to unlock all areas.

Invincibility

Enter "HE GIVES STRENGTH TO THE WEAK" as a code phrase.

Infinite Dead Eye

Enter "I DON'T UNDERSTAND IMNFINITY" as a code phrase.

Infinite Ammo

Enter "ABUNDANCE IS EVERYWHERE" as a code phrase.

Gun Set 1

Enter "IT'S MY CONSTITUTIONAL RIGHT" as a code phrase to unlock some weapons.

Gun Set 2

Enter "I'M AN AMERICAN. I NEED GUNS" as a code phrase to get the buffalo rifle, sawed-off shotgun, semi-auto pistol, Schofield revolver, Winchester repeater, and fire bottle x3.

Decrease Bounty

Enter "THEY SELL SOULS CHEAP HERE" as a code phrase.

Diplomatic Immunity

Enter "I WISH I WORKED FOR UNCLE SAM" as a code phrase. You will now have no bounty/wanted level.

Good Guy

Enter "IT AINT PRIDE. IT'S HONOR" as a code phrase to have a good reputation.

Famous

Enter "I AM ONE OF THEM FAMOUS FELLAS" as a code phrase to become famous.

Money

Enter "THE ROOT OF ALL EVIL, WE THANK YOU!" as a code phrase to get $500.

Horse

Enter "BEASTS AND MAN TOGETHER" as a code phrase to spawn a horse.

Infinite Horse Stamina

Enter "MAKE HAY WHILE THE SUN SHINES" as a code phrase.

Gang Chic

Enter "YOU THINK YOU TOUGH, MISTER?" as a code phrase to unlock the Treasure Hunter Outfit.

Man In Uniform

Enter "I LOVE A MAN IN UNIFORM" as a code phrase to unlock the Bureau Uniform, U.S. Army Uniform, and U.S. Marshal Uniform.

Sharp Dressed Man

Enter "DON'T YOU LOOK FINE AND DANDY" as a code phrase to unlock the Gentlemen's Suit.

Jack Attack

Enter "OH MY SON, MY BLESSED SON" as a code phrase to change John into Jack, John's son.

Who?

Enter "HUMILITY BEFORE THE LORD" as a code phrase to become a nobody.

Old School

Enter "THE OLD WAYS IS THE BEST WAYS" as a code phrase to enable the Sepia filter.