Screenshots
Code Name - Viper
Code Name: Viper is a 1990 action game developed by Capcom for the Nintendo Entertainment System. The game puts players in control of a commando operative tasked with infiltrating enemy territory across multiple missions. As a side-scrolling action title, it combines platforming elements with combat, requiring players to navigate hazardous environments while dispatching enemies. The protagonist moves left and right, jumps over obstacles, and uses various weapons to defeat foes. Each level presents distinct themed locations with progressively challenging enemy placements. Players encounter mid-level encounters and final boss confrontations requiring pattern recognition and precise timing. The game employs a password system for progression between stages. Code Name: Viper emphasizes reflexive gameplay where environmental awareness and weapon management prove essential for success.
- Developer
- Capcom
- Released
- 1990
- Platform
- NES
- Genre
- Action
- Players
- 1P
- Rating
- 4.9 / 5 (1.2K)
- Last updated
Code Name - Viper Controls — NES Keyboard Keys
Default keyboard bindings for Code Name - Viper on our in-browser NES emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | D-Pad Up | Move up |
| ↓ | D-Pad Down | Move down |
| ← | D-Pad Left | Move left |
| → | D-Pad Right | Move right |
| X | A | Primary action (jump / confirm) |
| Z | B | Secondary action (attack / cancel) |
| Enter | Start | Start / Pause |
| Shift | Select | Select / Mode |
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Code Name - Viper Longplay & Gameplay Videos
Watch a full playthrough of Code Name - Viper on NES before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Code Name - Viper" NES longplay 1990
Code Name - Viper Cheat Codes
30 community-curated cheats for Code Name - Viper. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
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Infinite Lives
SZOVKNVK06AA:09 -
Start With 1 Life
PENTAGLA -
Start With 6 Lives
TENTAGLA -
Start With 9 Lives
PENTAGLE -
Start With Double Usual Bullets
GTETLIZL -
Start With Half Usual Bullets
PPETLIZU -
Double Usual Bullets On New Life
GTOVEYZL -
Half Bullets On New Life
PPOVEYZU -
Start With Machine Gun And 256 Bullets
VVNVGKSE -
Machine Gun And 256 Bullets On New Life
VTOTONSE -
Infinite Machine Gun Bullets
AAOXLZPA -
Infinite Bullets For Your Gun
AENXZPPA
Show 18 more cheats Show fewer
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Upper Level Jump
SXKEVNOU+ONEOYEXN -
Keep Machine Gun After Dying
GZOTONSE+GZEVVNSE -
Infinite Energy
STVPVOON+AASOVZPASZVOSOSE06F8:04 -
Have All Adults/Children Rescued
0757:FF -
Have All Adults Rescued
06EC:09 -
Have All Children Rescued
06EA:09 -
Invincibility
SZSSGIAX -
Infinite Gun
06E0:63 -
Infinite Machine Gun
06E2:63 -
Hit Anywhere
SZOOKKSU+APOOSGLA+GLXPEGLP+AASIVEAL -
Have Bomb
AEESIIGA -
Infinite Health
06F8:02 -
Infinite Time
06E6:DF -
Infinite Continues
0756:09 -
Infinite Bullets
06E0:2E -
Fake Bullets Modifier (Ten's Digit)
06B1:00 -
Fake Bullets Modifier (One's Digit)
06B2:00 -
Max Score (Ones)
06BE:09
External references
Frequently Asked Questions
When was Code Name - Viper released?
Code Name - Viper was released in 1990 for the NES.
Who developed Code Name - Viper?
Code Name - Viper was developed by Capcom, available to play in your browser on RetroGameSpace.
How many players does Code Name - Viper support?
Code Name - Viper is a single-player Action game for the NES.
What type of game is Code Name - Viper?
Code Name - Viper is a Action game for the NES, playable instantly in your browser — no downloads, no installs.
How can I play Code Name - Viper for free?
Open this page and click "Play Now" — Code Name - Viper runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Code Name - Viper in the browser?
No. Code Name - Viper streams from a public archive into a browser-side NES emulator. Nothing is installed on your computer.
Can I save my progress in Code Name - Viper?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original NES cartridge supported.
Does Code Name - Viper work on mobile devices?
Yes — the NES emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Code Name - Viper this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Code Name - Viper. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
