# Black Jacket

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

- Steam appid: 3100370
- Developer: Mi'pu'mi Games GmbH
- Publisher: Skystone Games
- Released: 2026 · Genre: Adventure · List price: $14.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $44.8k to $67.3k per month (mid $56.0k)
- Opportunity score: $56.0k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 52.0k · Est. lifetime net revenue: $261.5k
- Review sentiment: 91% positive across 1713 reviews (1626 from Steam purchases)
- Review velocity: 446.0 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Last build shipped 1 months ago
- Last discounted 0 months ago, 3 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $101.7k |
| After VAT / sales tax (-13% blended) | $88.5k |
| After refunds (-9.5% median) | $80.1k |
| Net to developer (after Steam 30%) | $56.0k |

## Monthly review counts, oldest to newest (3 months)

930, 284, 124

## Markets by review language

- schinese: 34%
- brazilian: 4%
- english: 47%
- russian: 8%
- french: 2%
- german: 2%
- koreana: 0% (game NOT localized in this language)
- spanish: 2%
- japanese: 1%

## 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/3100370
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.