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Sovereign Brain Empire

Sovereign Brain Empire

“Who isn’t a baby anyway?”~You travelled to a parallel world governed by the Sovereign Brain AI. In SB Empire, you’re an adopted “one-year-old”, recognized as a "Monarch-level" prodigy! There will be beauties giving you a sheltered babyhood. Your brilliance and privileges will change their fates!

Released Feb 21, 2025 Developer Mountain and Sea Studio Platforms Windows RPGFMVStory RichChoices MatterMultiple Endings
View on Steam ↗ $9.99 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

79.4%positive466 reviews
Not recommended · 4 found this helpful

“hell nah why am I a adopted grown man that act like a 1 year old?”

— a player, Steam review · 1 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

23achievements
37.6%median completion
15.4%rarest: Ending One
63.4% of players 59.7% of players 54.8% of players 54.5% of players 53.4% of players 47.4% of players 44.5% of players 43.5% of players 38.5% of players 38.4% of players 38.0% of players 37.6% of players 37.3% of players 37.0% of players 34.1% of players 34.0% of players 33.7% of players 29.1% of players 26.3% of players 21.0% of players 20.6% of players 19.0% of players 15.4% of players 63.4% 0% most earned rarest
Almost everyone has
63.4%"The Calledfather" — Chapter I: When Xiaoxiao teaches you to call him dad, select "Call Dad" to unlock.
59.7%Baby's Babble — Chapter I: When Weiwei insists the computer never makes mistakes, select "Keep Questioning" to unlock.
54.8%Seeing Your Beauty — Chapter II: After discovering Xiaoxiao's cross-dressing, select "You're so Pretty" to unlock.
Rarest badges of honor
15.4%Ending One — Ending One
19.0%Ending Four — Ending Four
20.6%Ending Two — Ending Two

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.

$9.99current · sampled 2026-09-26 21:12 UTC
$9.99lowest since tracking began2026-09-26
US9.99 USD
EU9.75 EUR
UK8.50 GBP
Australia14.50 AUD
Canada12.99 CAD
Japan1,200 JPY
Brazil32.99 BRL
China42.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$6.3 Brazil Japan Canada US Australia EU UK≈$11

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Feb 21, 2025
Updated the game by replacing some of the videos related to the male protagonist

The first day of the game online, received a lot of players' comments and suggestions, we have seriously listen to and think about it, thank you for your prodding and support ~! Updated the following

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresAdventure, Casual, Indie, RPG, Simulation, Strategy
Player tagsRPG · FMV · Story Rich · Choices Matter · Multiple Endings · Immersive Sim · First-Person · Interactive Fiction · Visual Novel · Singleplayer · Comedy · Sci-fi (Steam store community voting)
FeaturesSingle-player · Steam Achievements · Steam Cloud · Family Sharing
LanguagesEnglish, Japanese, Simplified Chinese * , Traditional Chinese * , Korean, French, Italian, German, Russian, Indonesian *
Achievements23
Minimum system requirements (PC)

Minimum: OS: Windows 10 Processor: Inter Core i3 Memory: 4 GB RAM Graphics: 独立显卡或集成显卡 DirectX: Version 11 Network: Broadband Internet connection Storage: 60 GB available space Additional Notes: 最好能支持10bit播放，不然会降低画面质量