# Mango's Fisharium

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

- Steam appid: 3697890
- Developer: Evrac Studio
- Released: 2025 · Genre: Casual · List price: $2.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $194 to $291 per month (mid $242)
- Opportunity score: $327/month at x1.35 dormancy multiplier
- Est. lifetime owners: 9.4k · Est. lifetime net revenue: $9.5k
- Review sentiment: 82% positive across 305 reviews (295 from Steam purchases)
- Review velocity: 9.7 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 13 months
- Studio active elsewhere (4 titles tracked), so this one may welcome a partner
- Last build shipped 14 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 | $440 |
| After VAT / sales tax (-13% blended) | $383 |
| After refunds (-9.5% median) | $346 |
| Net to developer (after Steam 30%) | $242 |

## Monthly review counts, oldest to newest (14 months)

61, 81, 38, 25, 12, 7, 5, 9, 11, 9, 1, 5, 4, 28

## Estimated acquisition range

$5.8k to $11.6k (2-4x the trailing net annuity of $2.9k/year). Same error range applies.

## Markets by review language

- spanish: 1% (game NOT localized in this language)
- brazilian: 1% (game NOT localized in this language)
- french: 1% (game NOT localized in this language)
- german: 6% (game NOT localized in this language)
- english: 90%
- koreana: 1% (game NOT localized in this language)

Localization gap: 10% of measured reviews are written in languages the game does not support (top: german). 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/3697890
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.