When you purchase a newspaper always check the bottom right for the codes. There may also be others throughout the paper. Enter the following codes to activate the corresponding cheat option. Note: Enabling cheat codes will prevent the game from being saved and will prevent achievements or trophies from being unlocked.
CHEAT OPTION - CHEAT CODE Who? (become a nobody) - HUMILITY BEFORE THE LORD Jack Attack (turn John into Jack, his son) - OH MY SON, MY BLESSED SON Decrease bounty - THEY SELL SOULS CHEAP HERE Old School (sepia graphics) - THE OLD WAYS IS THE BEST WAYS Money (+$500) - THE ROOT OF ALL EVIL, WE THANK YOU! Gun Set 1 - IT'S MY CONSTITUTIONAL RIGHT Gun Set 2 (Buffalo rifle, sawed-off shotgun, semi-auto pistol, Schofield revolver, Winchester repeater, fire bottle x3) - I'M AN AMERICAN. I NEED GUNS Coach - NOW WHO PUT THAT THERE? Infinite Ammo - ABUNDANCE IS EVERYWHERE Infinite Horse Stamina - MAKE HAY WHILE THE SUN SHINES Infinite Dead Eye - I DON'T UNDERSTAND IMNFINITY Invincibility - HE GIVES STRENGTH TO THE WEAK Horse (spawn horse) - BEASTS AND MAN TOGETHER Lewis & Clark (all areas unlocked) - YOU GOT YOURSELF A FINE PAIR OF EYES Diplomatic Immunity (no bounty/wanted level) - I WISH I WORKED FOR UNCLE SAM Famous - I AM ONE OF THEM FAMOUS FELLAS Man In Uniform (Bureau Uniform, U.S. Army Uniform, and U.S. Marshal Uniform) - I LOVE A MAN IN UNIFORM Good Guy (get good reputation) - IT AINT PRIDE. IT'S HONOR Sharp Dressed Man (Gentleman's suit) - DON'T YOU LOOK FINE AND DANDY Treasure Hunter outfit - YOU THINK YOU TOUGH, MISTER? Hic (become drunk) - I'M DRUNK AS A SKUNK AND TWICE AS SMELLY