# 侦探，请守护我的秘密吧！

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

- Steam appid: 3391500
- Developer: 喜瑞互娱工作室
- Released: 2025 · Genre: Indie · List price: $8.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $261 to $392 per month (mid $327)
- Opportunity score: $441/month at x1.35 dormancy multiplier
- Est. lifetime owners: 16.8k · Est. lifetime net revenue: $50.5k
- Review sentiment: 89% positive across 574 reviews (524 from Steam purchases)
- Review velocity: 4.3 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 15 months
- Studio quiet across its whole catalog
- Last build shipped 15 months ago
- Store page localized in only 1 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $593 |
| After VAT / sales tax (-13% blended) | $516 |
| After refunds (-9.5% median) | $467 |
| Net to developer (after Steam 30%) | $327 |

## Monthly review counts, oldest to newest (15 months)

460, 7, 2, 3, 11, 19, 6, 10, 4, 2, 4, 5, 6, 6, 3

## Estimated acquisition range

$7.8k to $15.7k (2-4x the trailing net annuity of $3.9k/year). Same error range applies.

## Markets by review language

- schinese: 97% (game NOT localized in this language)
- english: 2% (game NOT localized in this language)
- koreana: 1% (game NOT localized in this language)

Localization gap: 100% of measured reviews are written in languages the game does not support (top: schinese). Localizing is likely immediate market expansion.

## 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/3391500
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.