Contra

Contra (Probotector in Europe) is a video game for the NES that was originally released in arcades. The game is known for its intense difficulty and brilliant two player mode. While the game was popular on the arcades, it became a household name when Konami personally ported the title over to the NES.

Konami Code
Contra is not the first game to use the code, contrary to popular belief. The game that debuted the code was in fact another popular Konami title - Gradius. The Konami code varies in the games they're found in, though they're all based around a core combination. The code found in Contra is -

Up, Up, Down, Down, Left, Right, Left, Right, B, A.. Once you perform this combination, you're character will be rewarded 30 lives.