# Sovereign Brain Empire

> ResidualPlay case file: an overlooked Steam game still earning residual revenue. Estimates carry a ±30-50% error range per title.

- Steam appid: 3382300
- Developer: Mountain and Sea Studio
- Released: 2025 · Genre: Adventure · List price: $9.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $301 to $452 per month (mid $377)
- Opportunity score: $509/month at x1.35 dormancy multiplier
- Est. lifetime owners: 13.1k · Est. lifetime net revenue: $43.9k
- Review sentiment: 80% positive across 460 reviews (410 from Steam purchases)
- Review velocity: 4.5 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 18 months
- Studio active elsewhere (4 titles tracked), so this one may welcome a partner
- Last build shipped 18 months ago

## Where a gross dollar goes (monthly, at current velocity)

| Stage | USD/month |
|---|---|
| Gross storefront sales | $684 |
| After VAT / sales tax (-13% blended) | $595 |
| After refunds (-9.5% median) | $539 |
| Net to developer (after Steam 30%) | $377 |

## Monthly review counts, oldest to newest (18 months)

296, 24, 36, 5, 8, 6, 5, 1, 12, 6, 2, 5, 1, 3, 3, 5, 5, 10

## Estimated acquisition range

$9.0k to $18.1k (2-4x the trailing net annuity of $4.5k/year). Same error range applies.

## Markets by review language

- schinese: 90%
- german: 1%
- koreana: 2%
- brazilian: 0% (game NOT localized in this language)
- french: 0%
- english: 5%
- russian: 1%
- spanish: 0% (game NOT localized in this language)
- japanese: 0%

## Methodology

Units are estimated from Steam-purchase reviews times a release-cohort multiplier (Boxleiter method, 20-75x by year). Revenue uses an effective price (lifetime discounts and regional pricing) and nets out VAT (~13%), refunds (~9.5%) and Steam's 30% cut: roughly 55% of gross reaches the developer.

Source: https://residualplay.com/game/3382300
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.