9. Flying Cars - Grand Theft Auto: San Andreas
How It's Activated: Press Square, Down, L2, Up, L1, Circle, Up, X and Left while playing (on PS2), and a message should confirm that the cheat has been correctly entered.
What It Does: At this point, any car can essentially be flown like a plane, which makes traversing the world of Los Santos that much more convenient and fun; no longer do you have to worry about pesky things like pedestrians, other cars, and worst of all, the cops. Beware, though, that you cannot exit the car until you come to a complete stop, and if you crash into a body of water, you will never be able to exit the car. Instead, you'll have to restart the game or use another cheat that blows the car up or commits suicide. This cheat also appeared in GTA IV, and hopefully will also show up in the upcoming GTA V.