You don't read a finished story — you complete an unfinished life.
Shibuya Koh — the mind behind Nobunaga's Ambition — chose Oda Nobunaga as the face of the series not because the man succeeded, but because he fell before he could finish. Hideyoshi rose from nothing and unified the country; Ieyasu built an empire that lasted three centuries. Their lives were complete. Nobunaga collapsed at Honnō-ji with the map still unfinished. That's why Shibuya made him the protagonist. In this game, you live the 'what if' Nobunaga never had. The essence of historical simulation isn't just to walk in someone else's shoes — it's to take their unfinished work and see it through. Think about it that way, and your own unfinished work starts to look different. It's not a failure. It's possibility.
— inspired by Yoichi Erikawa (Shibuya Koh)
About this game
Released in 1990, Nobunaga no Yabou: Sengoku Gunyuuden (Nobunaga's Ambition: Lord of War) brought Koei's acclaimed historical simulation series to the Famicom. As a feudal warlord in Japan's Warring States period, you command generals, wage battles, and work to unify 38 provinces. The game introduced night raids, siege warfare, and a deeper general system than earlier entries. Producer Shibuya Koh — Koei founder Yoichi Erikawa's pen name — chose Oda Nobunaga as the series protagonist not because he succeeded, but because he fell at Honnō-ji before finishing what he began. Players live the 'what if' Nobunaga never had.
Key Features
Full-scale historical simulation with 38 provinces, subordinate generals each with unique abilities, night raids and siege warfare strategies, and battery-backed save system for long campaigns.
The Story Behind
This was the third Nobunaga's Ambition title and the first on Famicom to feature a robust general system. The series began on PC-88 in 1983 and became Koei's flagship franchise — outlasting Super Mario, Dragon Quest, Final Fantasy, and Street Fighter to celebrate its 40th anniversary in 2023. Creator Yoichi Erikawa, under the pen name Shibuya Koh, handled development, sales, and user support himself in the early years while transitioning his family's dye chemical business into game software development.
Tricks & Tales
The Famicom version was released two years after the PC-88SR original (December 1988). Shibuya Koh chose Nobunaga over Hideyoshi or Ieyasu because their lives were complete stories — Hideyoshi rose from nothing and unified the country, Ieyasu built an empire that lasted three centuries — while Nobunaga collapsed at Honnō-ji with the map still unfinished, leaving room for the player to complete what he could not.
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 Nobunaga no Yabou: Sengoku Gunyuuden copies regularly.
Will this cartridge still save my progress?
Nobunaga no Yabou: Sengoku Gunyuuden uses a battery-backed save system — a single LR44 coin battery sealed inside the cartridge keeps your campaigns alive when the power is off. That battery was built to last ten to fifteen years; every copy is now past thirty-five. So if a cartridge forgets your progress the moment you turn it off, it usually isn't broken — the battery is simply tired. It can be replaced, though removing the old one clears the saved game, so back up anything precious first. When buying, it's worth asking whether the save battery has already been changed.
My Nobunaga cartridge won't start — should I blow into it?
Please don't. The trouble is almost always dirty contacts, and the moisture in your breath slowly corrodes them further. Clean the gold pins gently with a cotton swab and 90%-or-higher isopropyl alcohol instead. Blowing only ever seemed to work because you also took the cartridge out and put it back while doing it.
Before You Buy
Things worth knowing before you buy Nobunaga no Yabou: Sengoku Gunyuuden
A short checklist for buying a used Famicom cartridge wisely — useful with any seller, anywhere.
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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.
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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.
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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.
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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.
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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.
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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.
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