The Konami Code, known in Japan as the Konami Command, is a cheat code that appears in many Konami video games, although the code also appears in some non-Konami games (via Wikipedia).
#1 – Google Docs
Google has added a new easter egg to Google Docs. Just enter up, up, down, down, left, right, left, right, B, A, and then enter. LOL! 😛
You can check the below video for applying it.!
#2 – Facebook
#3 – Marvel.com
Other List of Konami code websites :
Note : Recommended to use Mozilla Firefox browser. Browsers won’t accept this stuff!