# FEEDING YUYUKO

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

- Steam appid: 4045150
- Developer: LancerKoi
- Publisher: 白夜星象馆
- Released: 2025 · Genre: Casual · List price: $0.99
- Deal grade: D (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $20 to $30 per month (mid $25)
- Opportunity score: $25/month at x1.00 dormancy multiplier
- Est. lifetime owners: 1.5k · Est. lifetime net revenue: $510
- Review sentiment: 97% positive across 61 reviews (48 from Steam purchases)
- Review velocity: 3.0 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 8 months ago
- Last build shipped 10 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $45 |
| After VAT / sales tax (-13% blended) | $39 |
| After refunds (-9.5% median) | $36 |
| Net to developer (after Steam 30%) | $25 |

## Monthly review counts, oldest to newest (9 months)

16, 7, 8, 1, 6, 1, 2, 6, 2

## 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/4045150
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.