We saw few Easter Egg from android previously on android.com website. We find that android has recently updated with new Easter Egg game, this is hidden at the bottom of the page. Scroll the page down, You may see a android logo at the bottom footer of the page, click on the android logo and the games begin. A small mini game on snowball.
After hitting the snowman three times, you get a gold medal. You may see that green guy with the medal.
Check the below video to see android Easter Egg in Action.