Ninja Gaiden 2: The Dark Sword of Chaos arrived on the NES in 1990, developed and published by Tecmo. It landed during the console's mature years, when developers had a firm grasp of the hardware's capabilities, and it built directly on the foundation of the original Ninja Gaiden (1989) — one of the first NES games to use cinematic, anime-style cutscenes to tell a story between stages. By the time the sequel released, players had come to expect that signature storytelling approach, and Tecmo delivered it in full, expanding the narrative around protagonist Ryu Hayabusa and raising the production ambition noticeably. The plot involves a villain named Ashtar and a mysterious dark sword, continuing the supernatural action-adventure tone established in the first game. The cutscene sequences are more numerous and more elaborate than those in the original, cementing the series' reputation for story-driven presentation at a time when most action games offered little more than a title screen and a score counter. Gameplay in Ninja Gaiden 2 is a side-scrolling action platformer controlled with the NES's two-button layout. Ryu runs, jumps, and attacks with his sword, and can cling to and jump between walls — a mechanic carried over from the first game that remains one of the series' most distinctive movement tools. New to the sequel is the ability to create shadow clones: a technique that summons up to two doppelgangers that mirror Ryu's attacks, effectively tripling his offensive output. This clone mechanic fundamentally changes how players approach combat, making aggressive play more rewarding and helping manage the game's relentless enemy density. Ninja arts (sub-weapons powered by a shared magic meter) return from the original, offering options such as fire wheels and the invincible fire technique, and choosing when to spend that meter is a constant tactical consideration. The game is structured across seven acts, each subdivided into multiple stages. Stage design is tightly constructed, with enemies placed to punish careless movement and force deliberate platforming. A notorious feature carried over from the first game is that being hit by an enemy near a pit can knock Ryu backward into it, and certain enemy respawn behaviors mean that a single misstep can cascade into repeated deaths. Boss encounters are elaborate and require pattern recognition, with each boss having distinct attack phases. The difficulty is steep throughout, and the final stretch of the game is particularly demanding, requiring players to replay multiple stages after a late-game death — a design choice that frustrated many players at the time and remains the game's most debated aspect. In its era, Ninja Gaiden 2 was received as a strong sequel that refined and expanded what the original introduced. The cinematic presentation was praised as exceptional for a home console title, and the shadow clone mechanic was highlighted as a meaningful addition to the formula. The game's challenge was acknowledged as high even by the standards of the period, when difficult games were the norm rather than the exception.
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NINJA GAIDEN 2
忍者龙剑传:2
Ninja Gaiden 2, released in 1990 by Tecmo, is a side-scrolling action game for the NES. Players control Ryu Hayabusa, a ninja armed with a sword and throwing stars, battling through Japanese-inspired environments and supernatural enemies. The game features fast-paced combat with responsive controls, allowing players to slash, jump, and throw projectiles. Ryu can hang from surfaces and climb walls to navigate the level design. The action progresses across multiple stages, each presenting increasingly difficult enemy formations and boss encounters requiring pattern recognition and precise timing. Players have limited lives and continues, creating a challenging experience. The tight control mechanics and enemy AI make combat engaging throughout, with varied enemy types and environmental hazards that must be overcome to advance.
- Developer
- Tecmo
- Released
- 1990
- Platform
- NES
- Genre
- Action
- Players
- 1P
- Rating
- 4.4 / 5 (690)
- Last updated
About NINJA GAIDEN 2
What makes it special
The shadow clone mechanic introduced in Ninja Gaiden 2 is a concrete, verifiable innovation for the series and for NES action games broadly. By summoning up to two doppelgangers that replicate every sword swing and directional attack, the game rewards players who master positioning and aggressive play with a dramatic increase in damage output. This mechanic also interacts with sub-weapons, allowing clones to fire projectiles simultaneously, which makes certain boss fights significantly more manageable and gives skilled players a tangible power fantasy that the first game could not offer.
Pro tips
- Use the shadow clone technique (Ctrl + B on the item menu) as early as possible — maintaining two clones throughout a stage dramatically increases your damage output against both regular enemies and bosses.
- Manage your Ninja Art meter carefully: save the Invincible Fire technique for the most punishing boss phases rather than spending it on regular enemies you can defeat with clones and sword attacks.
- When wall-clinging, practice jumping between two close walls to climb vertically — this lets you dodge projectiles and reposition during boss fights without burning a Ninja Art.
- Learn enemy spawn positions in each stage before committing to a run; many deaths come from enemies appearing just as you land from a jump, so anticipating their location lets you attack preemptively.
- If you reach the final acts, conserve lives deliberately — dying in the last three stages sends you back to the start of Act 6-1, so reaching that checkpoint with multiple lives in reserve is more important than playing aggressively earlier.
NINJA GAIDEN 2 Controls — NES Keyboard Keys
Default keyboard bindings for NINJA GAIDEN 2 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.
NINJA GAIDEN 2 Longplay & Gameplay Videos
Watch a full playthrough of NINJA GAIDEN 2 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
"NINJA GAIDEN 2" NES longplay 1990
NINJA GAIDEN 2 Cheat Codes
30 community-curated cheats for NINJA GAIDEN 2. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
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Start With 1 Life
AEKGVTZA -
Infinite Lives
SXXGXAVG00A5:03 -
Almost Invincible!
SZNGKGSA -
Half-Energy From Medicine
LEUOSATA -
Double Energy From Medicine
GEUOSATE -
Stop Timer
SXVKLTVG -
Never Lose Ninja Power Item
GXKKUIVA -
Fast Running Ryu
ZEXGYAPA+SNEKYEVN -
Mega-Fast Running Ryu
LEXGYAPA+KNEKYEVN -
Start With 6 Lives
IEKGVTZA+SEKKKTSP -
Start With 9 Lives
AEKGVTZE+SEKKKTSP -
Half-Energy From Blue Ninja Power
IAUONEZA+IAKOOEZA
Show 18 more cheats Show fewer
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Double Energy From Blue Ninja Power
GPUONEZA+GPKOOEZA -
Double Maximum Ninja Power From Scroll
GOEPOEZA+ZEOOEAPA -
All Powers Use Up Only 5 Points
SVOPXXSN+SVOOKXSN+SVXOXXSN -
Infinite Ninja Power
XXEOSZVZ+LOEOVXIY+PUOOSXLK -
Messes Up Background
SNAKEO -
Messes Up Time Digits
IPAKIN -
Instant Death
OKLOSS -
Messes Up Colour (Cannot Tell Where To Go)
YZZIII -
Strange Music
ESTATE -
Less Enemies
AAZVYL -
Infinite Health
EANGKGSA0080:16 -
Walk Thru Enemies
SZUGKGAI -
Another Walk Thru Enemies
OPOKUXUG -
Start Every Life With 2 Shadow Ninjas
YAOIYOPEYAPIYO -
Untouchable
ATOKOXGG0068:09 -
Adds tapping sound to drum beats / Weird SFX
STAAIK -
Stage intro & cutscenes are different colors
STAZIK -
Bats fly straight at you
AIITTT
External references
Frequently Asked Questions
When was NINJA GAIDEN 2 released?
NINJA GAIDEN 2 was released in 1990 for the NES.
Who developed NINJA GAIDEN 2?
NINJA GAIDEN 2 was developed by Tecmo, available to play in your browser on RetroGameSpace.
How many players does NINJA GAIDEN 2 support?
NINJA GAIDEN 2 is a single-player Action game for the NES.
What type of game is NINJA GAIDEN 2?
NINJA GAIDEN 2 is a Action game for the NES, playable instantly in your browser — no downloads, no installs.
How can I play NINJA GAIDEN 2 for free?
Open this page and click "Play Now" — NINJA GAIDEN 2 runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play NINJA GAIDEN 2 in the browser?
No. NINJA GAIDEN 2 streams from a public archive into a browser-side NES emulator. Nothing is installed on your computer.
Can I save my progress in NINJA GAIDEN 2?
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 NINJA GAIDEN 2 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 NINJA GAIDEN 2 this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of NINJA GAIDEN 2. 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.
How long does it take to beat Ninja Gaiden 2?
A first playthrough typically takes 3 to 6 hours, though the steep difficulty and the late-game checkpoint penalty — which forces replaying from Act 6-1 after dying in the final stages — can extend that considerably for players still learning enemy patterns.
Is Ninja Gaiden 2 harder than the first game?
The shadow clone mechanic makes combat more forgiving in some respects, but the game's enemy density, aggressive spawn placement, and the punishing final-stage checkpoint make it broadly comparable in difficulty to the original, with the endgame considered by many players to be the harder stretch.
What is the best starting strategy for a new player?
Prioritize learning wall-jump mechanics in the early stages before enemy pressure becomes severe. Unlock and maintain shadow clones as soon as the technique is available, and resist spending your Ninja Art meter on regular enemies — save it for bosses.
Is Ninja Gaiden 2 worth playing today?
Yes, if you appreciate tight NES-era action platformers with cinematic presentation. The controls are responsive, the shadow clone mechanic adds genuine depth, and the cutscene storytelling remains impressive for the hardware. Expect a stiff challenge and be prepared for the late-game checkpoint system.