# Sumire's Secret

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

- Steam appid: 4398370
- Developer: Soft Circle Courreges 
- Publisher: Kagura Games
- Released: 2026 · Genre: Casual · List price: $9.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $904 to $1.4k per month (mid $1.1k)
- Opportunity score: $1.8k/month at x1.60 dormancy multiplier
- Est. lifetime owners: 896 · Est. lifetime net revenue: $3.0k
- Review sentiment: 93% positive across 72 reviews (28 from Steam purchases)
- Review velocity: 13.5 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Studio active elsewhere (3 titles tracked), so this one may welcome a partner
- Last build shipped 3 months ago
- 61% of reviews come from key activations (excluded from revenue estimates)
- Store page localized in only 3 language(s)
- Last discounted 2 months ago, 1 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $2.1k |
| After VAT / sales tax (-13% blended) | $1.8k |
| After refunds (-9.5% median) | $1.6k |
| Net to developer (after Steam 30%) | $1.1k |

## Monthly review counts, oldest to newest (2 months)

26, 1

## Missed seasonal-sale revenue (modeled)

Skipped 1 Steam seasonal sale window(s) in the last 2 months. Running a -50% discount in those windows is modeled at +$42 net in total, assuming a unit uplift of x3.0 (industry-typical for old catalog titles). Same ±30-50% error range applies.

## Estimated acquisition range

$27.1k to $54.3k (2-4x the trailing net annuity of $13.6k/year). Same error range applies.

## Markets by review language

- english: 19%
- schinese: 81%

## 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/4398370
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.