# Into the Slimy Mines

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

- Steam appid: 3639440
- Developer: Ant Workshop Ltd
- Publisher: Wales Interactive
- Released: 2026 · Genre: Action · List price: $12.99
- Deal grade: C (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.1k to $1.6k per month (mid $1.4k)
- Opportunity score: $1.4k/month at x1.00 dormancy multiplier
- Est. lifetime owners: 832 · Est. lifetime net revenue: $3.6k
- Review sentiment: 100% positive across 31 reviews (26 from Steam purchases)
- Review velocity: 12.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 2 months ago
- Studio active elsewhere (2 titles tracked), so this one may welcome a partner
- Last build shipped 2 months ago
- Last discounted 0 months ago, 2 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $2.5k |
| After VAT / sales tax (-13% blended) | $2.1k |
| After refunds (-9.5% median) | $1.9k |
| Net to developer (after Steam 30%) | $1.4k |

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

24, 1

## Missed seasonal-sale revenue (modeled)

Skipped 2 Steam seasonal sale window(s) in the last 2 months. Running a -50% discount in those windows is modeled at +$1.4k net in total, assuming a unit uplift of x3.0 (industry-typical for old catalog titles). Same ±30-50% error range applies.

## Markets by review language

- english: 85%
- koreana: 4%
- russian: 8%
- japanese: 4%

## 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/3639440
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.