PCGame

NOBUNAGA'S AMBITION: Sphere of Influence

Historical grand strategy about unifying Japan through diplomacy and war

KOEI TECMO GAMES CO., LTD. · Released Sep 1, 2015

Strategy

Reviews
Very Positive
84% of 592
Recent reviews
Not enough recent
Players
13
daily peak, Nov 7, 2026
Steam Deck
Unsupported
Last update on Steam
10 years ago
Oct 25, 2016
Minimum PC
VRAM 128MB over
1 GB RAM · 7 GB disk
Full requirements

Metacritic: 70/100 (critic reviews)

What is NOBUNAGA'S AMBITION: Sphere of Influence?

This historical strategy game puts you in charge of a warlord during Japan’s Warring States period. Across historical scenarios, you manage your domain, negotiate with other warlords, and command troops in battles as you work toward unification.

For you if...

  • +you like managing a domain alongside diplomacy and battles
  • +you want strategy set in Japan’s Warring States period

Not for you if...

  • −you prefer action to managing armies and alliances
  • −you want a game without an initial learning curve

What players say

84% of 592 reviews are positive

Players praise the strategy gameplay and say it is a good starting point for the series.

Screenshots and trailer

NOBUNAGA'S AMBITION: Sphere of Influence screenshot 1

NOBUNAGA'S AMBITION: Sphere of Influence system requirements

Minimum: VRAM 128MB over, 1 GB RAM, 7 GB of disk space.

As published by the developer.

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Minimum

OS
Windows®
Processor
Pentium®4 1.6GHz
Graphics
VRAM 128MB over
Memory
1 GB RAM
Storage
7 GB available space
DirectX
Version 9.0c
Notes
Shader model: Version 3.0, 1024 x 768 or 1280 x 720 minimum display resolution

Recommended

OS
Windows®
Processor
Core2 Duo 2.0GHz
Graphics
VRAM 512MB over
Memory
1 GB RAM
Storage
7 GB available space
DirectX
Version 9.0c
Notes
Shader model: Version 3.0, 1024 x 768 or 1280 x 720 minimum display resolution

Does NOBUNAGA'S AMBITION: Sphere of Influence have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does NOBUNAGA'S AMBITION: Sphere of Influence run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

  • Not supported on SteamOS

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Steam features
Cloud saves, Family Sharing, Trading cards
Languages
Full audio: English.

Does NOBUNAGA'S AMBITION: Sphere of Influence use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam

Tags

Recent updates

9 DLC available.

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