Tecmo's Ninja Gaiden sequel on Famicom. Harder stages, more cutscenes, and Ryu's brother as the final enemy.
Ninja Gaiden II: The Dark Sword of Chaos was developed and published by Tecmo for Famicom in April 1990 — the sequel to the original Ninja Gaiden, continuing Ryu Hayabusa's story with a new dark enemy, Ashtar, and new protagonist-antagonist dynamics. The cinematic cutscene presentation — which had been unprecedented in the original game — was expanded in the sequel. The difficulty was high; the NES version was slightly easier than the Famicom original. Ninja Gaiden II sold approximately 1 million copies and solidified the series as Tecmo's most prominent action franchise.
About this game
Ninja Gaiden II: The Dark Sword of Chaos, released in April 1990, continued the series' groundbreaking use of anime-style cinematic cutscenes to tell a story — an approach the first Ninja Gaiden had pioneered on the Famicom in 1988. Ryu Hayabusa now has a new ability: he can summon shadow clones of himself, adding a tactical dimension to both combat and platforming. The game's production values — dense action, expressive spritework, and extensive story sequences — set a high bar for action games of the era.
Gallery
The Story Behind
The original Ninja Gaiden (1989) is widely credited as the first NES/Famicom game to use extensive in-game cinematics — over 20 minutes of cutscenes — making it a landmark in narrative-driven game design. Ninja Gaiden II maintained and deepened this tradition. The series' influence on cinematic storytelling in action games can be traced through countless successors, from early 1990s action games through the cinematic games of the PlayStation era.
Tricks & Tales
The game was branded internally at Tecmo as 'Tecmo Theater Vol. 3' — a deliberate label emphasizing its cinematic production values and positioning it as an entertainment experience closer to film than conventional games. The shadow clone mechanic — summoning up to two identical Ryu clones that mimic your every action — was a technically impressive effect that gave the player unusual battlefield control.
Collector's Guide
Region & Compatibility
Famicom and NES are the same hardware family but use physically incompatible cartridge formats — Famicom carts have a 60-pin connector and a narrower shell, while NES carts use a 72-pin connector with a wider housing. You cannot insert a Famicom cartridge into a North American NES slot without an adapter, and vice versa. The Famicom itself has no lockout chip, so any Famicom cartridge from Japan will run on a Famicom console regardless of origin. If you are buying a Japanese Famicom cart to play on a NES, you will need a 60-to-72-pin physical adapter; if you own a Famicom, Japanese-market software is your native format and no workarounds are needed.
Maintenance Tips
The gold-plated edge connectors on Famicom and NES cartridges pick up skin oils and oxidation over decades — a gentle wipe with a cotton swab dampened in 90% or higher isopropyl alcohol, stroking along the length of the pins rather than across them, is the accepted standard. Let the alcohol fully evaporate before reinserting. The old habit of blowing into a cartridge is folklore: the moisture in breath causes slow corrosion of the contacts over time, and any improvement you felt came from the act of re-seating the cart, not from the breath itself. Nintendo eventually updated its own troubleshooting guidance to say explicitly: do not blow into your Game Paks.
Going deeper
Explore the machine this game ran on, and what to check before you buy or care for one:
What to Watch Out For
Before buying, these are the points worth knowing — from someone who handles original Japanese Ninja Gaiden II: The Dark Sword of Chaos copies regularly.
Will this Japanese Famicom cartridge work on a North American Nintendo Entertainment System (NES)?
No, not without an adapter. The Famicom uses a 60-pin edge connector while the NES uses a 72-pin connector with a physically different form factor — the two are incompatible at the cartridge slot level. Third-party adapters exist that bridge the pin difference and allow Famicom cartridges to run in a NES. On a Japanese Famicom, NES cartridges face the same incompatibility in reverse. To play Japanese Famicom software, you need a Japanese Famicom, a Famicom-compatible clone console, or a NES fitted with an appropriate adapter.
How should I clean a Famicom cartridge to ensure reliable play?
Apply 90% or higher isopropyl alcohol to a cotton swab and gently wipe the gold-plated PCB edge contacts on the base of the cartridge. Never blow into the cartridge — breath moisture accelerates contact corrosion over time. If cleaning is needed inside, Famicom cartridges use 3.8mm security game bit screws (not standard Phillips); a security bit screwdriver is required to open the shell without damage. Note that most Famicom boot failures originate in the 60-pin console slot rather than the cartridge itself — cleaning the console slot contacts separately with a contact cleaning tool is often the more effective fix.
Before You Buy
Things worth knowing before you buy Ninja Gaiden II: The Dark Sword of Chaos
A short checklist for buying a used Famicom cartridge wisely — useful with any seller, anywhere.
-
Choose a seller who tests it before shipping
A copy that has actually been powered on and checked is a known quantity. An untested one is a gamble you only settle after it arrives.
Look for a seller who states it was function-tested and says what they confirmed. A serious seller can tell you exactly what was checked.
-
Make sure it fits your console
This is a Japanese Famicom cartridge with a 60-pin connector; a North American NES uses a 72-pin slot, so it will not fit directly.
Play it on a matching Japanese console or a region-free system, and confirm the listing states the region.
-
If this title saves your progress, check the battery
Cartridges that save use a small coin-cell battery that fades over decades — a dead one wipes your save without warning.
Ask the seller whether the save function was tested. Replacing the battery is possible, but doing so erases any existing save.
-
Check that the contacts are clean
Dirty edge contacts are the most common cause of startup and sound trouble in cartridges of this age.
Choose a seller who cleans the contacts before shipping. A note that it was tested and cleaned means the basics were handled.
-
Confirm it is genuine, not a reproduction
Sought-after titles are targets for reproduction boards with replacement labels.
Ask for a photo of the circuit board and look for factory markings. Favour a shop with a licensed second-hand dealer permit (古物商) — by law its stock has a traceable origin, your simplest guard against fakes.
-
Read the seller's reviews and return policy
A 100% positive record across thousands of sales is close to a guarantee — packing, communication and problem-solving all work for everyone. A return policy protects you if something is off.
Read the feedback and confirm a clear return window before you buy.
The last step before buying anywhere is knowing what it's worth.
See what we have in stock →Unexpected Discoveries
Games you weren't looking for — but might be glad you found.
Rooms this game lives in
Wander deeper — explore the themed rooms where Ninja Gaiden II: The Dark Sword of Chaos sits alongside its kin.
Memories from around the world
This is a young museum, and this page is still waiting for its first voices. The memories people send reach Taisei personally, and the ones that move him find a home here over time — always with the writer's blessing. Yours could be the very first for this game.
Share your memory ↑