# The Dark Queen of Mortholme

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

- Steam appid: 3587610
- Developer: Mosu
- Publisher: Monster Theater
- Released: 2025 · Genre: Indie · List price: $4.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $7.6k to $11.4k per month (mid $9.5k)
- Opportunity score: $9.5k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 126.5k · Est. lifetime net revenue: $211.7k
- Review sentiment: 83% positive across 4159 reviews (3954 from Steam purchases)
- Review velocity: 227.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Last build shipped 1 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $17.3k |
| After VAT / sales tax (-13% blended) | $15.0k |
| After refunds (-9.5% median) | $13.6k |
| Net to developer (after Steam 30%) | $9.5k |

## Monthly review counts, oldest to newest (12 months)

1165, 232, 226, 297, 290, 433, 213, 324, 200, 246, 144, 238

## Markets by review language

- russian: 27%
- spanish: 4%
- brazilian: 8%
- french: 7%
- german: 2%
- english: 51%
- koreana: 1%
- japanese: 0%
- schinese: 0% (game NOT localized in this language)

## 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/3587610
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.