# Rumbral

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

- Steam appid: 3565040
- Developer: OSEA Innovations
- Publisher: Out of Mana
- Released: 2026 · Genre: Adventure · List price: $12.99
- Deal grade: D (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $653 to $980 per month (mid $817)
- Opportunity score: $817/month at x1.00 dormancy multiplier
- Est. lifetime owners: 960 · Est. lifetime net revenue: $4.2k
- Review sentiment: 87% positive across 60 reviews (30 from Steam purchases)
- Review velocity: 7.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 3 months ago
- Last build shipped 4 months ago
- 50% of reviews come from key activations (excluded from revenue estimates)
- Last discounted 1 months ago, 4 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $1.5k |
| After VAT / sales tax (-13% blended) | $1.3k |
| After refunds (-9.5% median) | $1.2k |
| Net to developer (after Steam 30%) | $817 |

## Monthly review counts, oldest to newest (4 months)

18, 4, 6, 2

## Markets by review language

- russian: 21%
- spanish: 11%
- japanese: 4%
- schinese: 4%
- brazilian: 7%
- french: 11%
- german: 4%
- english: 39%

## 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/3565040
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.