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X-Box :: Destroy All Humans! Cheat Codes

Bulletproof Crypto (invincibility)
Pause the game while playing as Crypto, then hold L and press X, Y, Left(2), Y, X. If you entered the code correctly, a message will appear.

Ammo-A-Plenty (infinite ammunition)
Pause the game, then hold L and press Left, Y, White, Right, Black, X. If you entered the code correctly, a message will appear.

Deep Thinker (infinite concentration)
Pause the game, then hold L and press Black, White, Y, Right, White, Y. If you entered the code correctly, a message will appear. Your concentration meter must be above 0% or you will not be able to use any of your mental abilities.

Pox Unlocks (all upgrades)
Pause the game while on the Mothership, then hold L and press X, Y, Left(2), Y, X. If you entered the code correctly, a message will appear. All upgrades for the currently unlocked weapons will be available for purchase from Pox's lab.

Mmm... Brains! (increase DNA)
At the Mothership's main menu, hold L and press Black(2), White(2), Left, Right, Left, Right, White, Black. If you entered the code correctly, a message will appear.

Aware Like A Fox (maximum alert meter)
Pause the game, then hold L and press Right, X, White, Black, Right, White. If you entered the code correctly, a message will appear.

Nobody Loves You (reset alert meter)
Pause the game, then hold L and press White, Right, White, Black, X, Right. If you entered the code correctly, a message will appear.

Blind Humans
Pause the game, then hold L and press White, Black, Right, Left, X, Black, White. If you entered the code correctly, a message will appear.

Alien From Ipanema mode
Pause the game, then hold L and press Y, Black, Left(2), White. If you entered the code correctly, a message will appear.

Helvetica mode
Pause the game, then hold L and press Black, White, Black, X, Black, White(2). If you entered the code correctly, a message will appear.

I Told U I Was Hardcore mode
Pause the game, then hold L and press White(2), Right, X, Y, Black, White, Black. If you entered the code correctly, a message will appear.

Monkey Brad mode (annoys FlexMentallo)
Pause the game, then hold L and press White, Right, Left, Black, Y, White, Black, X. If you entered the code correctly, a message will appear.

Furongami movies
Collect all the probes in the indicated side mission to unlock the corresponding movie in the "Furonigami" option under the Archives menu:

Art Of The Furon: Santa Modesta

Blue Book: Saucer Blueprints: Rockwell

Evolution Of An Alien: Turnipseed Farm

Face of the Enemy: Area-42

Pathetic Humans!: Union Town

The Concept Barnyard: Capitol City

B-Movie Theater bonuses
Successfully complete the indicated level to unlock the corresponding movie under the "B-Movie Theater" option:

Furon Down!: Furon Down!

Outro Movie: Attack Of The 50 ft. President

Plan 9 From Outer Space: Teenage Zombies from Outer Space

Teenagers From Outer Space: Attack Of The 50 ft. President

Furon Propaganda bonuses
Successfully complete the Attack Of The 50 ft. President level to unlock the following entries under the "Furon Propaganda" option: Crypto, Phone Home!, Developer Darwinism: Evolution Of The Game, E3 Booth Footage, and Goofy Screenshots And Voice-Overs.

Screensaver
Allow the game to idle for awhile; eventually the screen will turn black and white and elevator music will play in the background.

Pox remarks
Allow the game to idle at the mission selection screen and Pox will make various remarks.

Control objects
When you pick something up, you can control it with the Right Analog-stick.

Super Crypto
Enable the "Bulletproof Crypto", "Ammo-A-Plenty", and "Deep Thinker" codes, then get all of Crypto's upgrades. After this you can turn into a human and walk around TK'ing everything.

Super saucer
Enable the "Bulletproof Crypto" and "Ammo-A-Plenty" codes while on your saucer. It will not get damaged or lose ammunition.

Faster Destruction in saucer
Instead of holding R to destroy buildings or large objects, tap R and the destruction will happen faster without waiting for the recharge.

Hypnotize faster
While trying to hypnotize people, rapidly tap X.

Getting away from the law
Don't bother trying to run away from the authorities with short legs; use your jetpack liberally to fly away. Press Left Analog-stick Forward and hold A to boost away.

Finding more probes
Probes are necessary to get upgrades quicker. In order to find them all, make sure to look high up on rocks or hard to reach places. Your jetpack is essential in getting to the high places. You may have to get up on the ledge or building, then use your jetpack to fly higher to get the probe. Also when you are in Capitol City, you can find about ten probes by the broken Pentagon.

Better DNA value
Every chance you get, do not kill a human before you extract their brain stem. Extract their brain stem first as it will make the DNA worth more (25 instead of 10). The easiest humans to do this to are the scientists in the level with glowing cows. For some reason, if the person that is important to you dies (the person you need to abduct), extract their brain stem before you return to the Mothership -- the DNA is usually worth more. Additionally, it is rare to find humans with brain stems that are worth 50 or 100 DNA. Most humans have brain stems that are only worth 10 or 25 DNA. If you walk around Union Town, there will be humans with signs on them reading, "REPENT THE END IS NEAR". Those humans will have a brain stem worth 50 DNA. Also, Mystery Agents' brain stems are worth 25 DNA points most of the time, whether dead or not. The Psi G-Men are worth 150 DNA alive and 75 DNA dead.
After you complete the game all brain stems will be worth more when you use the anal probe:

Citizen from 10 to 15

Cops from 25 to 40

Repent Men (Union City) 50 to 75

Army from 25 to 40

G-Men from 50 to 75

Staying human
After getting out of your UFO, aim at a human and press B. When you have changed into the human, the bar on the top left corner of the screen will go down. When it is all gone, you will change back into an alien. If you want to remain human, turn into a human and while walking around, scan other humans or animals to make the bar on the top left corner stay up. Additionally, turn into a human then enable the "Ammo-A-Plenty" code. You will stay human forever. You do not have to scan thoughts to get out of the human body -- just press B.

HoloBob
Put your target (dot in the middle of the screen) on any human, and press B. In order to maintain your HoloBob, you must read the thoughts of the humans walking around. You can read the same person's thoughts repeatedly to keep your mental powers charged.

Ride the Washington Monument
Find the monument, then throw cars at it until it breaks into two pieces. Get on the long pointy piece, PK the middle, and try to stay on.

Lower brain juice meter
When you are in the form of another person, to make you brain juice meter go down, read other people's thoughts.

Levitation death
It you levitate a person for a long time, they will die.

Moonwalk
Stand in an open area on any level and walk forward. Keep decreasing your speed until you eventually begin walking in place.

Extra robot arm
When done with a mission at Capital City, enable the "Deep Thinker" and "Bulletproof Crypto" codes. Then, go to the bridge that goes to the octagon. Attack the people to get the robots to attack you. Use the mind control on the robots and lay them about over the edge. You can see a robot arm pulling the robot into the water.

Plan 9 From Outer Space reference
Halfway through the game you will experience a level where you go to the drive-in to switch films with the one that is showing. Watch what is showing before you switch films to see that the film is Edward D. Wood, Jr.'s Plan 9 From Outer Space.

   

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