NOBUNAGA'S AMBITION: Sphere of Influence
Released Sep 2015
Become a Daimyo of the Warring States period of Japanese history in NOBUNAGA'S AMBITION, a historical simulation game of conquest and domination. It is the 30th anniversary of this series and this current release, NOBUNAGA'S AMBITION: Sphere of Influence, is the crown of the series.
83% positive · 619 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $59.99
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Evaluation
NOBUNAGA'S AMBITION: Sphere of Influence launched on September 1, 2015 as a complete historical strategy game. All nine DLC scenario packs were released on the same day as the base game, indicating they were part of the launch package rather than post-launch content additions. The developer's news activity on this Steam page is minimal — a bug fix patch in October 2016 and a post in October 2016 directing players to a separate, newer title ("Sphere of Influence - Ascension," App ID 375450). That post was promoting the localization of the follow-up game, not announcing new content for this one. There have been no developer communications of any kind since October 2016, no unreleased DLC, no roadmaps, and no announcements of future updates. The game launched as a finished product with its scenario content included at release, and the developer has since moved on to the successor title.
Evidence
All 9 DLC scenario packs released on the same day as the base game, indicating launch-day content rather than post-launch additions
Developer post promotes 'Sphere of Influence - Ascension,' a separate successor title, with a discount on this game to celebrate. This is the last communication on this game's Steam page.
Content
9 of 9 released · no outstanding content
Media
Details
Developer
Publisher
KOEI TECMO GAMES CO., LTD.
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Unsupported
Players
Single-player
About this game
The renowned historical simulation series returns with enhanced features in "Nobunaga's Ambition: Sphere on Influence". Take the role of the legendary Warring States Daimyō (Warlords) such as "Nobunaga Oda" and "Shingen Takeda" to work your way towards unification by making best use of domestic affairs, diplomacy and battles against the fierce Warlord neighbors.
The installment has numerous enhancements and features to it's predecessor "Nobunaga's Ambition: Souzou" by expressing the Warring era's highlight, the "Battle of Sekigahara" in the highest quality ever to date in the franchise's history. Also the numerous in game procedures required in making progress towards unification has seen a major revamp in all areas.
- Recreate the "Battle of Sekigahara" your way:
Realistic as it gets, simultaneous strategy executions recreating a realistic battle condition. New systems are in place such as the "Alliance" command allowing you to join hands with other Warlords or "Corps under the command system" allowing you to take full control of the numerous unique Warlords under your command.
- Command your troops on the ever changing battlefields:
Battles has become more dynamic with new fields and situations being added requiring more tactical planning and troop controls than before.
- New scenarios and "Sengoku Chronicle" creating a dynamic Warring State Era:
4 new scenarios tracing the historical facts are in place such as "Birth of Nobunaga" (1534), "Battle of Sekigahara" (1600) with New "Sengoku Chronicle" seeing over 500 Officers being added to the character listing.
- New features based on player feedbacks:
Enriched game play experience with an enhanced edit features, new objects and Imperial Diplomacy to name some additions from the strong requests from our fans!
The installment has numerous enhancements and features to it's predecessor "Nobunaga's Ambition: Souzou" by expressing the Warring era's highlight, the "Battle of Sekigahara" in the highest quality ever to date in the franchise's history. Also the numerous in game procedures required in making progress towards unification has seen a major revamp in all areas.
- Recreate the "Battle of Sekigahara" your way:
Realistic as it gets, simultaneous strategy executions recreating a realistic battle condition. New systems are in place such as the "Alliance" command allowing you to join hands with other Warlords or "Corps under the command system" allowing you to take full control of the numerous unique Warlords under your command.
- Command your troops on the ever changing battlefields:
Battles has become more dynamic with new fields and situations being added requiring more tactical planning and troop controls than before.
- New scenarios and "Sengoku Chronicle" creating a dynamic Warring State Era:
4 new scenarios tracing the historical facts are in place such as "Birth of Nobunaga" (1534), "Battle of Sekigahara" (1600) with New "Sengoku Chronicle" seeing over 500 Officers being added to the character listing.
- New features based on player feedbacks:
Enriched game play experience with an enhanced edit features, new objects and Imperial Diplomacy to name some additions from the strong requests from our fans!
Are these done yet?
Last evaluated Jun 27, 2026
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