# Barnacle

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

- Steam appid: 4627630
- Developer: LuN
- Released: 2026 · Genre: Adventure · List price: $6.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $703 to $1.1k per month (mid $879)
- Opportunity score: $1.4k/month at x1.60 dormancy multiplier
- Est. lifetime owners: 1.1k · Est. lifetime net revenue: $2.5k
- Review sentiment: 97% positive across 36 reviews (33 from Steam purchases)
- Review velocity: 15.0 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Last build shipped 3 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 | $1.6k |
| After VAT / sales tax (-13% blended) | $1.4k |
| After refunds (-9.5% median) | $1.3k |
| Net to developer (after Steam 30%) | $879 |

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

29, 1

## Estimated acquisition range

$21.1k to $42.2k (2-4x the trailing net annuity of $10.5k/year). Same error range applies.

## Markets by review language

- english: 94% (game NOT localized in this language)
- koreana: 3% (game NOT localized in this language)
- japanese: 3% (game NOT localized in this language)

Localization gap: 100% of measured reviews are written in languages the game does not support (top: english). 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/4627630
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.