# Islantiles

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

- Steam appid: 3634010
- Developer: Thunderrock Innovations
- Released: 2026 · Genre: Casual · List price: $14.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $2.8k to $4.2k per month (mid $3.5k)
- Opportunity score: $3.5k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 1.9k · Est. lifetime net revenue: $9.5k
- Review sentiment: 91% positive across 67 reviews (59 from Steam purchases)
- Review velocity: 28.0 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 2 months ago
- Last build shipped 2 months ago

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $6.4k |
| After VAT / sales tax (-13% blended) | $5.6k |
| After refunds (-9.5% median) | $5.0k |
| Net to developer (after Steam 30%) | $3.5k |

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

52, 4

## Markets by review language

- schinese: 5%
- french: 4%
- german: 19%
- english: 67%
- koreana: 4%
- japanese: 2%

## 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/3634010
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.