Successfully complete and save the game on the medium difficulty setting to unlock the "Game Speed", "Blast Force", "One Hit Kill" and "Weapons Stay" options for multi-player mode.

Hard difficulty bonus

Successfully complete and save the game on the hard difficulty setting to unlock the "Unlimited Ammo", "All weapons", "Game Speed", "Blast Force", "One Hit Kill" and "Weapons Stay" options for multi-player mode.

Game Shark Codes

Reverse Joker Command P1	D00C7DD0 ????
Player 1 Codes
Infinite Health	800CBDA0 0064
Have All Weapons	800C7F38 0FFF
Infinite Armor	800C7F1E 0064
Infinite Shotgun & Super Shotgun Ammo	800C7F3C 0064
Infinite Machine Gun & Chaingun Ammo	800C7F3E 0064
Infinite Grenades & Grenade Launcher Ammo	800C7F40 0064
Infinite Rocket Launcher Ammo	800C7F42 0064
Infinite Hyper Blaster & BFG Ammo	800C7F44 0064
Infinite Rail Gun Ammo	800C7F46 0064
Super Jump (Press Square)	D00C7DD0 8000 800CBD86 FEC7

Back To PlayStation Index

Einstein dies and goes to heaven. At the Pearly Gates, Saint Peter tells him, "You look like Einstein, but you have NO idea the lengths that some people will go to sneak into Heaven. Can you prove who you really are?"

Einstein ponders for a few seconds and asks, "Could I have a blackboard and some chalk?"

Saint Peter snaps his fingers and a blackboard and chalk instantly appear. Einstein proceeds to describe with arcane mathematics and symbols his theory of relativity.

Saint Peter is suitably impressed. "You really ARE Einstein!" he says. "Welcome to heaven!"

The next to arrive is Picasso. Once again, Saint Peter asks for credentials.

Picasso asks, "Mind if I use that blackboard and chalk?"

Saint Peter says, "Go ahead."

Picasso erases Einstein's equations and sketches a truly stunning mural with just a few strokes of chalk.

Saint Peter claps. "Surely you are the great artist you claim to be!" he says. "Come on in!"

Then Saint Peter looks up and sees George W. Bush. Saint Peter scratches his head and says, "Einstein and Picasso both managed to prove their identity. How can you prove yours?"

George W. looks bewildered and says, "Who are Einstein and Picasso?"

Saint Peter sighs and says, "Come on in, George."