Remember the 1950s? Sure you don't, but I'm sure you've seen footage of that lovely time in American culture when good old Dad was mowing the lawn of his suburbia home, Son was selling ice cold lemonade on the corner, Daughter was going out with the rebel that listens to that habnabbery "Rock 'N Roll" music, and Mom baked a pie that was cooling in the window. Mmmm, pie. But what's this? There's something in the sky... A bird? A plane? A spaceship?

Have no fear, the human race! We at IGN Guide's are going to save yo-wait... Oh yeah, we're going to blow up the planet... That's right, our bad. Have no fear, lil' alien! We're going to disintegrate human bones in no time flat! If you're still convicting Michael Jackson, you're lost in the Intro. If you don't know your ray gun from your UFO, check out the Basics. Looking to study your alien abilities? Check out the Powers section. Need help completing a mission? Browse the Walkthrough. Want to collect those Probes? Head to the Probes section. Need some help without trying? Check out the Secrets, you dirty cheater and unlocker. Lastly, you can chat away at the Boards in hopes of finding intelligent life on planet Earth... but we doubt it.

In this Destroy All Humans strategy guide, you'll find:

• Basic training for alien recruits.
• Details on all your alien powers.
• Complete Destroy All Humans walkthrough.
• Locations of all secret probes.

Attention, people of Earth! You dropped your wallet, and we're gonna go max out your charge cards! Cha-ching!

Get the Destroy All Humans Online Strategy Guide

Pause and hold L2. Enter SQUARE, CIRCLE, LEFT, LEFT, CIRCLE, SQUARE.

Pause the game and hold L2. Enter LEFT, CIRCLE, R2, RIGHT, R1, SQUARE.

Pause the game and hold L2. Enter R1, R2, CIRCLE, RIGHT, R2, CIRCLE. Your MC meter will not decline, but make sure it's above zero for the code to work.

Go to the mothership. Pause the game and hold L2. Enter SQUARE, CIRCLE, LEFT, LEFT, CIRCLE, SQUARE. All the upgrades for the unlocked weapons will become available at Pox's lab.

During a mission go to the start menu, hold L2, then enter RIGHT, SQUARE, R2, R1, RIGHT, R2.

You have to be on Mothership. Go to the start menu, hold L2, then enter R1, R1, R2, R2, LEFT, RIGHT, LEFT, RIGHT, R2.

During a mission go to the start menu, hold L2, then enter Right, R2, R1, Square, Right.

• Crypto phone home: Complete attack of the 50ft president.
• E3 booth footage: Complete attack of the 50ft president.
• Goofy screenshots and voice overs: Complete attack of the 50ft president.
• Art of the Furon movie: Collect all the probes in Santa Modesta
• Blue Book : Saucer Blueprints movie: Collect all the probes in Rockwell
• Evolution of an alien movie: Collect all the probes in Turnipseed Farm
• Face of the enemy movie: Collect all the probes in Area-42
• Pathetic Humans! movie: Collect all the probes in Union Town
• The Concept Barnyard movie: Collect all the probes in Capitol City
• Full-length Teenagers from Outer Space: Finish the game
• Outro movie: Complete attack of the 50ft president.
• Plan 9 from Outer Space clip: Defeat the Teenage Zombies from Outer Space mission