# Fish Lab

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

**Measured on 2026-09-15 09:35 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 4221990
- Developer: stonecodes
- Released: 2026 · Genre: Action · List price: $6.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $2.3k to $3.5k per month (mid $2.9k)
- Opportunity score: $4.6k/month at x1.60 dormancy multiplier
- Est. lifetime owners: 2.0k · Est. lifetime net revenue: $4.8k
- Review sentiment: 73% positive across 52 reviews (51 from Steam purchases)
- Review velocity: 49.0 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Last build shipped 0 months ago
- Last discounted 0 months ago, 1 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $5.2k |
| After VAT / sales tax (-13% blended) | $4.5k |
| After refunds (-9.5% median) | $4.1k |
| Net to developer (after Steam 30%) | $2.9k |

## Estimated acquisition range

$68.9k to $137.8k (2-4x the trailing net annuity of $34.4k/year). Same error range applies.

## Markets by review language

- brazilian: 2%
- french: 4%
- german: 2%
- english: 80%
- koreana: 4%
- russian: 4%
- japanese: 2%
- schinese: 2%

## Methodology

Units are estimated from Steam-purchase reviews times a release-cohort multiplier, 40-75x by year. Cohorts from 2020 on are calibrated against 182 sales milestones announced by developers; older ones follow the published Boxleiter tables. 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/4221990
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.