Have visited the Android's official website today? If no, open the website in a browser tab and check out this new easter egg on it. There is a little and neat easter egg at the page's bottom.
Scroll down and then click on the green Android guy and get ready to play the game. The snowballs have to be tossed at the snowman who is at the right of the screen.
The challenge in the game is that, you have to hit the snowman thrice before he could hit you back. It takes few tries to get the trick.
Google is quite famous for the easter eggs like the Let it Snow recently. Now, Android which is a flagship of Google as also started with this technique. Even Facebook created an easter egg last week that allows to use the profile pic as emoticons in chat.