# Mech Builder 3D

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

- Steam appid: 3667150
- Developer: Don Pachi
- Released: 2026 · Genre: Casual · List price: $14.99
- 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: 2.4k · Est. lifetime net revenue: $12.2k
- Review sentiment: 94% positive across 88 reviews (76 from Steam purchases)
- Review velocity: 6.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Studio active elsewhere (2 titles tracked), so this one may welcome a partner
- Last build shipped 3 months ago

## 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 (7 months)

36, 7, 12, 5, 7, 4, 4

## Markets by review language

- german: 3%
- english: 58%
- koreana: 4% (game NOT localized in this language)
- russian: 11% (game NOT localized in this language)
- spanish: 8%
- japanese: 11%
- schinese: 3%
- brazilian: 1%

Localization gap: 15% of measured reviews are written in languages the game does not support (top: russian). Localizing is likely immediate market expansion.

## 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/3667150
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.