Contra Nes Game Genie Cheat

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Operation C

Also known as: Contra (JP), Probotector (EU)
Developer: Konami
Publishers: Konami (JP), Ultra Games (US), Palcom Software (EU)
Platform: Game Boy
Released in JP: January 8, 1991
Released in US: February 1991
Released in EU: May 21, 1992

This game has a hidden sound test.
This game has a hidden level select.
This game has regional differences.
This game has revisional differences.

I had the NES Game Genie and Genesis Game Genie when I was a kid. I remember actually doing the triple stack of Game Genie, Sonic & Knuckles, Sonic 3. It was what was in my Genesis most of the time. I cheated a lot when I was a kid, but I don't remember beating any games while using the Game Genie for some reason. And select changed the mode to two players, and then start started the game, but the 'select start' is generally referred as part of the code. This code is referred to as 'The Konami Code', 'The Contra Code', or simply 'The Code'.

Operation C is a Contra game on the Game Boy with the soundtrack of Contra and gameplay of Super C. Seriously, Konami...you didn't have to.

  • 5Regional Differences

Sound Test

Press Up, Down, Left, Right, Start at the title screen. A plays the selected track, B stops, and Up/Down change tracks unless one is playing.

Level Select

Press Up, Up, Down, Down, Left, Right, Left, Right, B, A, B, A, Start at the title screen.

This only requires a code in the US version, and original European version.

It appears normally in both Japanese versions, and the European Konami GB Collection; many very early Konami Game Boy games (such as this game, Nemesis, and TMNT: Fall of the Foot Clan) featured a level select by default with some sort of punishment for playing the game to completion by starting on a later level, possibly owing to low battery life.

However, the level select cheat only allow players to access stages 1-4, not 5. Using patch codes can change this, which shows that it is present in the game’s code, but likely dummied out.

Also the Japanese version use this cheat to add an extra lives instead. The US and the European version uses the third kind of code for this.

Debug Leftovers

Use the Game Genie code 00A-EBF-C4D to re-enable the simple sprite viewer. During the game, press Start, then use A/B to replace the player's sprite with the one of the assigned sprite resources. Some of them are broken, there is no validity test for it.

Version Differences

The original European version has typical Probotector sprite swaps of humans to robots. This was reverted for Konami GB Collection, despite keeping the Probotector name.

As with all Konami GB Collection games, the Japanese update added Super Game Boy support, which was replaced by Game Boy Color support in Europe.

US/JPEU GBJP SGBEU GBC

Regional Differences

To do:
Probotector graphic comparisons.
Mini

9 Lives Code

The codes to start with 9 lives in each version of the game are different, and are as follows:

  • US/Europe: Up, Up, Up, Up, Down, Down, Down, Down, Left, Left, Left, Left, Start
  • Japan: Up, Up, Down, Down, Left, Right, Left, Right, B, A, B, A, Start (the US/Europe Level Select code; see above).
(Source: GameFAQs)
The Contra series
ArcadeSuper Contra
NESContra • Super C
DOSContra
Game BoyOperation C • Contra: The Alien Wars
SNESContra III: The Alien Wars
GenesisContra: Hard Corps
PlayStationContra: Legacy of War • C: The Contra Adventure
Sega SaturnContra: Legacy of War
WindowsKonami Collector's Series: Castlevania & Contra
Nintendo DSContra 4 (Prototype)
WiiContra ReBirth
Retrieved from 'https://tcrf.net/index.php?title=Operation_C&oldid=634378'


  • 30 Lives

GenieOn the screen where you choose how many players you want press: up,up,down,down,left,right, left,right,b,a,b,a,start. That should give you 30 lives instead of three! | Submitted by Anthony Betts
  • Cheat

At the title screen, quickly press Up, Up, Down, Down, Left, Right, Left, Right, B, A, B, A. You will then start with 30 lives. The really cool part is that after a continue, these lives come back again! | Submitted by Krishna Sampath
  • Hard Difficulty

After you beat the game, the credits roll by and you start over with the remaining lives you had. You will also start with the gun you had. This time around, there will be more enemies. They will also shoot a lot more, and some enemies may have more hit points.

Contra Force Nes Cheats Game Genie

  • Secret Ending (Japanese Version)

During the ending, before the closing credits starts rolling, press and hold the Select and Start and keep on holding until the credits are over. If done correctly, you will receive a message from Red Falcon, vowing his revenge.Genie
  • Shoot while ducking

When you enter the Base 1 or 2 levels, you can shoot high while ducking. Hold Up on Controller 2 while Controller 1 is ducking. You will be ducking but your bullets will appear to go high. This may be hard to pull off yourself, so help is recommended.
  • Sound Mode (JPN Only)

At the title screen, press and hold the A & B buttons simultaneously and push Start.
  • Stage Select (Japanese version only)

At the title screen, press and hold Up, Left and the A button. While holding these buttons, press Start and immediately hold Select. If done correctly, the stage select screen should appear.
  • Steal life from partner

If you die in a two player game, hold down A and B simultaneously.


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