# Sisterly Bliss ~Don't Let Mom Find Out~

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

- Steam appid: 4093400
- Developer: eyephon
- Publisher: MangaGamer
- Released: 2025 · Genre: Adventure · List price: $24.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $810 to $1.2k per month (mid $1.0k)
- Opportunity score: $1.6k/month at x1.60 dormancy multiplier
- Est. lifetime owners: 2.0k · Est. lifetime net revenue: $17.2k
- Review sentiment: 96% positive across 95 reviews (64 from Steam purchases)
- Review velocity: 4.8 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Last build shipped 11 months ago
- Store page localized in only 2 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $1.8k |
| After VAT / sales tax (-13% blended) | $1.6k |
| After refunds (-9.5% median) | $1.4k |
| Net to developer (after Steam 30%) | $1.0k |

## Monthly review counts, oldest to newest (7 months)

39, 3, 10, 3, 2, 4, 7

## Estimated acquisition range

$24.3k to $48.6k (2-4x the trailing net annuity of $12.2k/year). Same error range applies.

## Markets by review language

- english: 17%
- schinese: 83%

## 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/4093400
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.