# Sphenoid

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

- Steam appid: 3533010
- Developer: Kileka Games
- Released: 2025 · Genre: Adventure · List price: $10.99
- Deal grade: D (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $418 to $626 per month (mid $522)
- Opportunity score: $522/month at x1.00 dormancy multiplier
- Est. lifetime owners: 1.1k · Est. lifetime net revenue: $4.0k
- Review sentiment: 86% positive across 35 reviews (34 from Steam purchases)
- Review velocity: 5.7 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 9 months ago
- Studio active elsewhere (2 titles tracked), so this one may welcome a partner
- Last build shipped 4 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $948 |
| After VAT / sales tax (-13% blended) | $825 |
| After refunds (-9.5% median) | $746 |
| Net to developer (after Steam 30%) | $522 |

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

22, 6, 1, 2, 2, 1

## Markets by review language

- koreana: 9%
- russian: 3% (game NOT localized in this language)
- spanish: 44%
- schinese: 12%
- english: 32%

## 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/3533010
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.