Contra (Video Game), known as Gryzor in Europe and Oceania, is a 1987 run and gun action game developed and published by Konami originally released as a coin-operated arcade game on February 20, 1987.

On the main menu, select Arcade Game, and then enter the following code: (Using the D-Pad) Up, up, down, down, left, right, left, right, B, A. If done correctly, the game will start up instead of ...

You should position your cursor before entering it or you will start a 2 player game. You can position it above options and when you enter the options menu it will say Player Lives 30. The code ...