# TOUHOU GENSOU MAHJONG

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

- Steam appid: 2491200
- Developer: D.N.A. Softwares
- Publisher: Mediascape Co.,Ltd.
- Released: 2024 · Genre: Casual · List price: $34.99
- Deal grade: D (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $511 to $767 per month (mid $639)
- Opportunity score: $639/month at x1.00 dormancy multiplier
- Est. lifetime owners: 3.5k · Est. lifetime net revenue: $35.3k
- Review sentiment: 46% positive across 114 reviews (108 from Steam purchases)
- Review velocity: 2.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 7 months ago
- Last build shipped 7 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 | $1.2k |
| After VAT / sales tax (-13% blended) | $1.0k |
| After refunds (-9.5% median) | $914 |
| Net to developer (after Steam 30%) | $639 |

## Monthly review counts, oldest to newest (20 months)

54, 10, 8, 2, 2, 1, 3, 3, 4, 2, 1, 3, 1, 3, 4, 2, 1, 4, 3, 1

## Markets by review language

- english: 39% (game NOT localized in this language)
- koreana: 6% (game NOT localized in this language)
- russian: 1% (game NOT localized in this language)
- japanese: 38%
- schinese: 15% (game NOT localized in this language)

Localization gap: 62% 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 (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/2491200
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.