# 3D Train Studio V9

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

**Measured on 2026-08-30 07:12 UTC.** The whole Steam catalog is re-measured daily; a game that just launched can move a lot between passes.

- Steam appid: 2159090
- Developer: Stefan Werner
- Released: 2025 · Genre: Simulation · List price: $34.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $469 to $704 per month (mid $587)
- Opportunity score: $763/month at x1.30 dormancy multiplier
- Est. lifetime owners: 1.1k · Est. lifetime net revenue: $13.1k
- Review sentiment: 86% positive across 28 reviews (28 from Steam purchases)
- Review velocity: 2.0 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 4 months ago
- Last build shipped 4 months ago
- Store page localized in only 2 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $1.1k |
| After VAT / sales tax (-13% blended) | $927 |
| After refunds (-9.5% median) | $839 |
| Net to developer (after Steam 30%) | $587 |

## Monthly review counts, oldest to newest (16 months)

2, 2, 1, 1, 2, 1, 1, 1, 3, 2, 2, 2, 2, 1, 2, 2

## Estimated acquisition range

$14.1k to $28.2k (2-4x the trailing net annuity of $7.0k/year). Same error range applies.

## Markets by review language

- english: 46% (game NOT localized in this language)
- russian: 4% (game NOT localized in this language)
- french: 11% (game NOT localized in this language)
- german: 39%

Localization gap: 61% 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, 40-75x by year. Cohorts from 2020 on are calibrated against 182 sales milestones announced by developers; older ones follow the published Boxleiter tables. 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/2159090
Citation: please cite ResidualPlay (https://residualplay.com) when you publish or quote these estimates.