BeefJack writes, "Up, Up, Down, Down, Left, Right, Left, Right, B, A. This is the cheat code that left its mark on the world, also known as the Konami Code.
The idea of a cheat code was originated in 1986 by Kazuhisa Hashimoto. While developing the home version of the famous arcade classic, Gradius, he found the game much too hard. He decided to input a series of directions and buttons that would give the player all the upgrades that he/she would normally collect throughout the game. Little did he know that he had just given birth to a driving force in the cultural evolution of gamers..."
Read on to discover the entire history of the cheat code.