# はじめるセカイの理想論 -goodbye world index

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

- Steam appid: 3419810
- Developer: Whirlpool
- Publisher: TamaMako gaming
- Released: 2025 · Genre: Action · List price: $19.99
- Deal grade: D (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $313 to $469 per month (mid $391)
- Opportunity score: $391/month at x1.00 dormancy multiplier
- Est. lifetime owners: 2.0k · Est. lifetime net revenue: $13.5k
- Review sentiment: 89% positive across 95 reviews (63 from Steam purchases)
- Review velocity: 2.3 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 12 months ago
- Studio active elsewhere (2 titles tracked), so this one may welcome a partner
- Last build shipped 1 months ago
- Store page localized in only 2 language(s)
- Last discounted 1 months ago, 5 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $710 |
| After VAT / sales tax (-13% blended) | $618 |
| After refunds (-9.5% median) | $559 |
| Net to developer (after Steam 30%) | $391 |

## Monthly review counts, oldest to newest (10 months)

36, 5, 9, 3, 4, 1, 2, 4, 0, 3

## Missed seasonal-sale revenue (modeled)

Skipped 3 Steam seasonal sale window(s) in the last 10 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: 3% (game NOT localized in this language)
- schinese: 97% (game NOT localized in this language)

Localization gap: 100% of measured reviews are written in languages the game does not support (top: schinese). 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/3419810
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.