Easter Eggs are hidden features or text in video games. For example, pressing "up, up, down, down, left, right, left, right, B, A, Start" at any menu screen in Star Wars: The Clone Wars will play the Ewok celebration song from Return of the Jedi. Or, if you go the top of bridge that connects San Fierro to Las Venturas in Grand Theft Auto, you'll see a sign that says:

“There are no Easter Eggs up here. Go away.”

Here are a few more fantastic Easter Eggs courtesy of Kezins.com:

World of Warcraft:

The Chicken Quest - First, find a chicken at Sal-deans’ Farm in Westfall. Then seduce it with a sweet, sexy chicken dance. This chicken is not an easy egg to crack - so repeat the dance about 100 times. The chicken will eventually give in, unable to resist your glorious moves. After you feed it special chicken feed from Farmer Saldean, return to the chicken and type "/cheer" - then wine and dine it. It will shed its inhibitions and lay an egg, which will then hatch and become your special chicken pet, loyal and true.

God of War II

On the PS2 you can enable HD mode by hitting "L1, L2, L3, Circle and Square" simultaneously any time before the “Sony Computer Entertainment Presents” screen pops up. If you’ve done it right the letters should turn purple and everything will begin looking like this:

Hitman: Contracts

Ah, the spooky ghost. Entirely worth all this effort:

1. In the level "Traditions of the Trade", enter the building and turn right.

2. Go in the door and wait for the guard to leave.

3. Once he leaves and the door closes, pick the lock on the door opposite to the one you used to come into the room.

4. Go through the door and look right. You should see a corner.

5. If you quickly run to the wall you are facing and look left you can see a ghost go through a wall.

6. Pick the lock on the door the ghost goes through, then enter the room and go to the mirror in the bathroom. You'll be able to see the ghost in the mirror.