# Key Fairy

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

- Steam appid: 2878580
- Developer: Owl Machine
- Released: 2026 · Genre: Action · List price: $19.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.4k to $2.1k per month (mid $1.7k)
- Opportunity score: $1.7k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 1.9k · Est. lifetime net revenue: $12.7k
- Review sentiment: 100% positive across 66 reviews (59 from Steam purchases)
- Review velocity: 10.3 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 3 months ago
- Last build shipped 1 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 | $3.1k |
| After VAT / sales tax (-13% blended) | $2.7k |
| After refunds (-9.5% median) | $2.5k |
| Net to developer (after Steam 30%) | $1.7k |

## Monthly review counts, oldest to newest (6 months)

33, 4, 4, 4, 8, 9

## Markets by review language

- english: 93% (game NOT localized in this language)
- koreana: 2% (game NOT localized in this language)
- spanish: 2% (game NOT localized in this language)
- japanese: 2% (game NOT localized in this language)
- schinese: 2% (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/2878580
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.