If you grew up playing video games in the 80’s, you may remember the Konami Code, a cheat code you could enter on many of the video games made by Konami. The Konami Code is Up Up Down Down Left Right Left Right B A. Entering it at, for example, the start of Teenage Mutant Ninja Turtles would unlock Very Hard Mode. Entering it at the start of Contra would give you 30 lives.