Nintendo :: Contra Cheat Codes
Three extra livesPress Up(2), Down(2), Left, Right, Left, Right, B, A at the title screen. Then, press Start to begin the game in single player mode or Select + Start to begin in two player mode.
Thirty lives per continue
Press Up(2), Down(2), Left, Right, Left, Right, B, A before the demonstration begins at the title screen. Then, press Start to begin the game in single player mode or Select + Start to begin in two player mode.
Unlimited lives
Press Up, Down, Up, Down, Left, Right, Left, Right, A, B, A, B, Select, Start when "Jungle" appears on the demonstration screen.
Transfer lives
Begin game play in two player mode. Press A + B when losing a life to use a life from the other player.
All weapons
Press Down(2), Up(2), Right, Left, Right, Left, A + B before the demonstration begins at the title screen.
Level select
Press Up(2), Down(2), Left, Right, Left, Right, B, A, Start(2) at the main menu.
Expert mode
Successfully complete the game and start another game. The new game will feature the same amount of lives at the end of the last game and more difficult opponents.
Sound test (Japanese version)
Hold B + A and press Start at the title screen to display the sound test screen to hear the game's sound effects and music.
Shoot while crouching
Crouch on controller one and press Up on controller two in the Base 1 or 2 levels.
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this game sucks and to get a bomb that kills all guys pre up down left right start start and then press a b together