The Game Census
NOBUNAGA'S AMBITION: Sphere of Influence cover art

NOBUNAGA'S AMBITION: Sphere of Influence

KOEI TECMO GAMES CO., LTD. · 2015-09-01

SteamPlayStation StoreAmazon

Strategy

Franchise: Nobunaga's Ambition · Modes: Single player · Perspectives: Bird view / Isometric

Releases: Dec 12, 2013 (PlayStation 3), Feb 22, 2014 (PlayStation 4), Mar 03, 2017 (Nintendo Switch), Sep 01, 2015 (PC (Microsoft Windows)), May 28, 2015 (PlayStation Vita)

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.

NOBUNAGA'S AMBITION: Sphere of Influence is a 2015 Strategy game priced at $59.99, with an estimated 20,000 to 50,000 owners and a Very Positive review sentiment (84% of 622 reviews).

9
playing now
84%
positive of 622 reviews
Very Positive
steam's rating (official)
20,000–50,000
owners (SteamSpy est.)
80/100
critic score (4 outlets, IGDB)
80/100
IGDB user rating (3 ratings)
4.52★
PlayStation Store rating (3,671 ratings)
platinum
deck/linux tier (ProtonDB)
Unsupported
Steam Deck (Valve)
SteamOS: Unsupported
$59.99
steam price (US)

9 players in-game as of 2026-10-14 06:00 UTC (census sample)

Health check

Quiet
  • · 9 players in-game at the last census sample.
  • · 17 reviews in the last 8 weeks (~2/week).
  • · Review velocity up 13% vs the prior 8 weeks.
  • · Top 19% of 14,082 Strategy games in the census by review count.

Health tier since 2026-08-31

Estimated sales: 16k–37k copies

Review-multiple estimate from 622 total reviews — how this is computed.

All-time low: $20.40 at GreenManGaming (2018-07-24)via IsThereAnyDeal

12-month high $59.99 · on sale 7 of 12 observed days (census price snapshots)

Review momentum

PositiveNegative
121220162026Week of 2016-09-01: 2 positiveWeek of 2016-09-01: 1 negativeWeek of 2016-10-01: 5 positiveWeek of 2016-10-01: 1 negativeWeek of 2016-11-01: 11 positiveWeek of 2016-11-01: 1 negativeWeek of 2016-12-01: 5 positiveWeek of 2016-12-01: 2 negativeWeek of 2017-01-01: 5 positiveWeek of 2017-01-01: 1 negativeWeek of 2017-02-01: 12 positiveWeek of 2017-02-01: 1 negativeWeek of 2017-03-01: 1 positiveWeek of 2017-03-01: 1 negativeWeek of 2017-04-01: 6 positiveWeek of 2017-04-01: 1 negativeWeek of 2017-05-01: 6 positiveWeek of 2017-06-01: 5 positiveWeek of 2017-06-01: 3 negativeWeek of 2017-07-01: 5 positiveWeek of 2017-07-01: 2 negativeWeek of 2017-09-01: 2 positiveWeek of 2017-09-01: 1 negativeWeek of 2017-10-01: 1 positiveWeek of 2017-10-01: 2 negativeWeek of 2017-11-01: 8 positiveWeek of 2017-12-01: 3 positiveWeek of 2018-01-01: 2 positiveWeek of 2018-02-01: 4 positiveWeek of 2018-02-01: 1 negativeWeek of 2018-03-01: 2 positiveWeek of 2018-03-01: 1 negativeWeek of 2018-04-01: 1 positiveWeek of 2018-06-01: 2 positiveWeek of 2018-06-01: 1 negativeWeek of 2018-07-01: 4 positiveWeek of 2018-07-01: 1 negativeWeek of 2018-09-01: 1 positiveWeek of 2018-10-01: 2 positiveWeek of 2018-11-01: 8 positiveWeek of 2018-12-01: 1 positiveWeek of 2018-12-01: 1 negativeWeek of 2019-01-01: 1 positiveWeek of 2019-02-01: 1 positiveWeek of 2019-02-01: 1 negativeWeek of 2019-03-01: 2 negativeWeek of 2019-05-01: 1 positiveWeek of 2019-06-01: 1 positiveWeek of 2019-07-01: 2 positiveWeek of 2019-08-01: 2 positiveWeek of 2019-09-01: 1 positiveWeek of 2019-10-01: 1 positiveWeek of 2019-11-01: 2 positiveWeek of 2019-12-01: 2 positiveWeek of 2019-12-01: 1 negativeWeek of 2020-01-01: 8 positiveWeek of 2020-02-01: 4 positiveWeek of 2020-03-01: 6 positiveWeek of 2020-04-01: 5 positiveWeek of 2020-05-01: 3 positiveWeek of 2020-05-01: 1 negativeWeek of 2020-06-01: 1 positiveWeek of 2020-07-01: 1 positiveWeek of 2020-07-01: 1 negativeWeek of 2020-08-01: 2 positiveWeek of 2020-09-01: 1 positiveWeek of 2020-10-01: 1 positiveWeek of 2020-11-01: 1 positiveWeek of 2020-12-01: 1 negativeWeek of 2021-02-01: 2 positiveWeek of 2021-03-01: 1 positiveWeek of 2021-04-01: 4 positiveWeek of 2021-05-01: 3 positiveWeek of 2021-05-01: 1 negativeWeek of 2021-07-01: 1 positiveWeek of 2021-08-01: 1 negativeWeek of 2021-09-01: 2 negativeWeek of 2021-10-01: 1 positiveWeek of 2021-11-01: 1 positiveWeek of 2022-01-01: 4 positiveWeek of 2022-02-01: 1 negativeWeek of 2022-03-01: 4 positiveWeek of 2022-03-01: 1 negativeWeek of 2022-04-01: 3 positiveWeek of 2022-05-01: 4 positiveWeek of 2022-06-01: 3 positiveWeek of 2022-06-01: 2 negativeWeek of 2022-07-01: 2 positiveWeek of 2022-07-01: 2 negativeWeek of 2022-08-01: 1 positiveWeek of 2022-10-01: 1 positiveWeek of 2022-11-01: 1 negativeWeek of 2022-12-01: 1 positiveWeek of 2023-01-01: 1 positiveWeek of 2023-03-01: 4 positiveWeek of 2023-04-01: 6 positiveWeek of 2023-04-01: 1 negativeWeek of 2023-07-01: 1 positiveWeek of 2023-08-01: 1 positiveWeek of 2023-08-01: 1 negativeWeek of 2023-09-01: 4 positiveWeek of 2023-10-01: 2 positiveWeek of 2023-10-01: 1 negativeWeek of 2023-11-01: 1 positiveWeek of 2024-01-01: 1 positiveWeek of 2024-02-01: 1 positiveWeek of 2024-02-01: 1 negativeWeek of 2024-03-01: 4 positiveWeek of 2024-03-01: 1 negativeWeek of 2024-04-01: 1 positiveWeek of 2024-04-01: 1 negativeWeek of 2024-05-01: 1 negativeWeek of 2024-06-01: 1 positiveWeek of 2024-07-01: 2 positiveWeek of 2024-08-01: 1 positiveWeek of 2024-09-01: 2 positiveWeek of 2024-10-01: 1 positiveWeek of 2024-11-01: 2 positiveWeek of 2024-11-01: 1 negativeWeek of 2024-12-01: 3 positiveWeek of 2025-02-01: 2 positiveWeek of 2025-04-01: 1 positiveWeek of 2025-05-01: 1 positiveWeek of 2025-06-01: 1 positiveWeek of 2025-06-01: 1 negativeWeek of 2025-09-01: 2 positiveWeek of 2025-10-01: 1 positiveWeek of 2025-11-01: 3 positiveWeek of 2025-11-01: 1 negativeWeek of 2025-12-01: 2 positiveWeek of 2026-02-01: 3 positiveWeek of 2026-04-01: 1 positiveWeek of 2026-05-01: 3 positiveWeek of 2026-06-01: 1 positiveWeek of 2026-08-01: 1 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

1742026-09-15 07:00 — 7 players2026-09-16 15:00 — 14 players2026-09-17 22:00 — 12 players2026-09-19 06:00 — 12 players2026-09-20 13:00 — 12 players2026-09-21 21:00 — 9 players2026-09-23 05:00 — 14 players2026-09-24 12:00 — 9 players2026-09-25 20:00 — 9 players2026-09-27 03:00 — 15 players2026-09-28 11:00 — 10 players2026-09-29 18:00 — 17 players2026-10-01 02:00 — 14 players2026-10-02 09:00 — 10 players2026-10-03 17:00 — 12 players2026-10-05 01:00 — 5 players2026-10-06 08:00 — 10 players2026-10-07 16:00 — 4 players2026-10-08 23:00 — 11 players2026-10-10 07:00 — 7 players2026-10-11 14:00 — 14 players2026-10-12 22:00 — 14 players2026-10-14 06:00 — 9 players
Concurrent players, hourly average, last 30 days (census samples).
4159Sep 2015Aug 2026Sep 2015 — avg 415 · peak 1,160Jan 2016 — avg 107 · peak 259May 2016 — avg 40 · peak 76Sep 2016 — avg 47 · peak 107Jan 2017 — avg 39 · peak 101May 2017 — avg 25 · peak 46Sep 2017 — avg 22 · peak 42Jan 2018 — avg 30 · peak 61May 2018 — avg 22 · peak 41Sep 2018 — avg 21 · peak 40Jan 2019 — avg 19 · peak 32May 2019 — avg 19 · peak 38Sep 2019 — avg 13 · peak 27Jan 2020 — avg 26 · peak 58May 2020 — avg 19 · peak 34Sep 2020 — avg 12 · peak 23Jan 2021 — avg 12 · peak 24May 2021 — avg 23 · peak 56Sep 2021 — avg 14 · peak 29Jan 2022 — avg 16 · peak 36May 2022 — avg 26 · peak 56Sep 2022 — avg 14 · peak 28Jan 2023 — avg 14 · peak 29May 2023 — avg 15 · peak 32Sep 2023 — avg 19 · peak 34Jan 2024 — avg 13 · peak 26May 2024 — avg 14 · peak 28Sep 2024 — avg 11 · peak 23Jan 2025 — avg 10 · peak 22May 2025 — avg 15 · peak 30Sep 2025 — avg 12 · peak 22Jan 2026 — avg 10 · peak 18May 2026 — avg 14 · peak 25Aug 2026 — avg 13 · peak 26
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Price history

$64.27$20.402015-09-012026-08-102015-09-01 — best price $49.792015-10-12 — best price $59.992015-11-25 — best price $39.592015-12-29 — best price $59.992016-03-21 — best price $29.992016-06-23 — best price $29.992016-09-16 — best price $59.992016-11-23 — best price $29.992017-01-02 — best price $59.992017-03-20 — best price $30.002017-07-14 — best price $30.002017-11-22 — best price $23.992018-01-01 — best price $59.992018-04-20 — best price $59.992018-07-05 — best price $59.992018-08-07 — best price $58.332018-11-21 — best price $23.992019-02-04 — best price $23.992019-11-18 — best price $58.152020-01-14 — best price $58.582020-02-07 — best price $58.152020-02-13 — best price $64.272020-03-09 — best price $59.992021-04-22 — best price $29.992021-08-18 — best price $60.882022-03-01 — best price $33.472022-04-21 — best price $29.702023-04-11 — best price $59.992024-03-25 — best price $23.992024-08-22 — best price $59.992025-02-03 — best price $59.992025-06-10 — best price $27.592026-02-09 — best price $29.992026-05-05 — best price $59.992026-07-31 — best price $23.992026-08-10 — best price $59.99
Lowest recorded price across tracked stores, per day (census snapshots).

Details

WindowsSingle-playerSteam Trading CardsSteam CloudFamily Sharing9 DLC

Post-launch support: 9 DLC released, first 2015-09-01 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
PS4, PS3 (PlayStation)1,0176%39

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

3DRTSWarWargameMilitaryStrategyTacticalDiplomacyHistoricalSimulation

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

BanishedOrder of Battle: World War IILife is Feudal: Forest VillageMedieval Kingdom WarsMashinkyAncient CitiesAge of Wonders: PlanetfallDawn of Man

Similarity via IGDB.

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