# 螢幕判官 Behind the Screen

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

- Steam appid: 821560
- Developer: 18Light Game Ltd.
- Released: 2018 · Genre: Action · List price: $8.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $103 to $155 per month (mid $129)
- Opportunity score: $271/month at x2.10 dormancy multiplier
- Est. lifetime owners: 12.2k · Est. lifetime net revenue: $23.6k
- Review sentiment: 85% positive across 291 reviews (244 from Steam purchases)
- Review velocity: 2.7 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 6.1 years
- Studio active elsewhere (3 titles tracked), so this one may welcome a partner
- Last build shipped 6.1 years ago
- Last discounted 1 months ago, 8 sales in the last 12 months
- Proven demand elasticity: x1.9 review velocity during past deep sales

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $234 |
| After VAT / sales tax (-13% blended) | $203 |
| After refunds (-9.5% median) | $184 |
| Net to developer (after Steam 30%) | $129 |

## Monthly review counts, oldest to newest (24 months)

6, 2, 1, 2, 5, 4, 1, 1, 0, 2, 3, 1, 3, 1, 0, 1, 2, 1, 3, 2, 1, 5, 4, 1

## 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/821560
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.