EarthSiege:
Either start a new campaign or resume an existing one from the main menu. Return to the main menu select any single mission. Enter the briefing area and select armament. Choose a very large herc and return to the briefing area. Cancel the single mission. Resume the campaign from the main menu, play through the first assigned mission and then save your game. Load your saved game back up and all hercs will be available to you fully loaded.

Earthworm Jim:
HATMAN: turns Jim into a stick figure.
IDDQD: shows EWJ team and prints "Nice try! This isn't Doom".
IDKFA: shows a group photo of the EWJ beta testers.
ITSAWONDERFUL: gives Jim an extra life.
ONANDONANDON: gives player the maximum number of continues.
POPQUIZHOTSHOT: maxes out normal gun with 1,000 shots.
SLAUGHTERHOUSE: allows player to jump to any of the first five levels.

Entrepeneur:
Single-player only! Press TAB, type in code, press ENTER
zeropercentinterest - gives $10,000,000
canyouspareadime - gives $100,000,000
nomoneydown - gives $100,000,000
iseelondoniseefrance - researches all regions
feelthatmojorising - gives 10 of each resource
idkfa - gives 99 of each resource
hitmeagain - gives one action card
upmysleeve - gives full hand of cards
impressme - current research project completed

Epic Pinball:
F1: press at options menu for an extra ball. While playing, press [ESC].
ESC, B, J: grants two balls that you can control.
X-/: makes flippers stick.

Eradicator:
\\: repeats last cheat (demo version only).
\2KRAD4U: kills you.
\76TRUMBOS: displays sound effects.
\AIMOVE: toggles enemy AI.
\AMOBJECT: shows objects in the automap.
\ARMS: all ammo.
\BLOAD: load a specific level.
\BLOODLUST: gives microchip powerup.
\BLUB: toggles slow motion.
\DIG: toggles clipping mode.
\DUNHOUR: kills all enemies.
\FMK: full health.
\FRAME: display framerate.
\FUSHIPI: invincibility.
\GIFT: all inventory items.
\GOBBET: gib yourself.
\GPS: displays location.
\GRAV: lowers gravity.
\GUNS: gives all ammo.
\OREILLY: gives radar tracker.
\OUCH: hurts you.
\OVERDRIVE: powerup microchip.
\POED: eliminates gravity.
\RAGAMUFFIN: invincibility.
\SPUTNIK: full map.
\TUNNEL: turns clipping mode off.
\VICI: complete the current level.
\XMAS: gives all inventory items.

Eraser:
CTRL-W: level skip.

Evidence:
During the game, you can use the following keys...
"C" + "V" - Automatic success for the car pursuit and the boat final 3D part of the game.
"C" + "F" - Give full health and ammos for the 3D scene (hospital underground and subway).

Excalibur 2555 A.D.:
*Depress [ESC] and [F12] simultaneously while entering the following codes:
FULL HEALTH: tap the up arrow once and the left arrow seven times.
FULL SWORD POWER: tap the up arrow two times, the left arrow two times, the right arrow two times and the left arrow two times again.
*Release [ESC] and [F12] and tap the space bar to continue game.

Extreme Assault:
OH DEAR: type this at the main screen to enable cheat mode.
ALT-1: grants full ammo.
ALT-2: grants a weapon upgrade.
ALT-3: boosts energy.
ALT-4: toggles god mode.
ALT-5: ?
ALT-6: ends the current mission.
ALT-7: deactivates enemies.
ALT-8: switches to helicopter mode.
ALT-9: switches to tank mode.
ALT-0: increases speed.