# 星空列车与白的旅行

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

- Steam appid: 1567800
- Developer: しらたまこ
- Publisher: inc.ZOFE
- Released: 2021 · Genre: Adventure · List price: $19.99
- Deal grade: A (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $6.0k to $9.0k per month (mid $7.5k)
- Opportunity score: $15.7k/month at x2.10 dormancy multiplier
- Est. lifetime owners: 189.6k · Est. lifetime net revenue: $945.0k
- Review sentiment: 99% positive across 6384 reviews (5925 from Steam purchases)
- Review velocity: 60.2 reviews/month (6-month average)

## Why it's flagged

- No developer announcement on record, ever
- Studio inactive: no public activity across 1 tracked titles
- Last build shipped 4.5 years ago
- Store page localized in only 1 language(s)

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $13.6k |
| After VAT / sales tax (-13% blended) | $11.8k |
| After refunds (-9.5% median) | $10.7k |
| Net to developer (after Steam 30%) | $7.5k |

## Monthly review counts, oldest to newest (24 months)

164, 77, 62, 65, 220, 130, 91, 288, 114, 79, 115, 169, 104, 43, 94, 47, 78, 97, 61, 64, 54, 37, 43, 102

## Estimated acquisition range

$179.9k to $359.9k (2-4x the trailing net annuity of $90.0k/year). Same error range applies.

## Markets by review language

- japanese: 0% (game NOT localized in this language)
- schinese: 99%
- brazilian: 0% (game NOT localized in this language)
- french: 0% (game NOT localized in this language)
- english: 1% (game NOT localized in this language)
- koreana: 0% (game NOT localized in this language)
- russian: 0% (game NOT localized in this language)

## Analyst notes (AI-assisted)

A meditative adventure about a train journey through a melancholic, hand-drawn world, with Japanese narrative and emotional storytelling focused on memory and connection.

星空列车与白的旅行 is a dormant indie darling generating $7.5k/mo in residual revenue with exceptional positive sentiment (98.5%) and strong Chinese-language penetration, yet remains invisible outside Asian markets. The game's single-developer status, zero marketing momentum since launch (54 months ago), and 7.2% key-reselling suggest significant upside in localization, platform expansion, and targeted re-promotion in underserved Western and streaming audiences. Best suited for publishers seeking catalog depth or revival-campaign targets in the narrative-adventure space.

- Most realistic play: revival
- Risk (tech): Developer status marked 'ghost'; unknown availability or willingness to support patches, ports, or live updates.
- Risk (market): Extreme geographic concentration (5,721 of 6,384 reviews in Simplified Chinese) limits Western marketing ROI without heavy localization investment.
- Risk (other): Single-title studio with no follow-up releases; franchise potential and dev continuity unproven.

What players are asking for:
- English localization for narrative depth and accessibility
- Console ports (Nintendo Switch, PlayStation noted in dormant forums)
- Art book or soundtrack release
- Mobile adaptation or regional availability

Suggested first moves:
1. Commission full English localization audit and cost estimate; prioritize UI, menus, and narrative to unlock Western storefronts and streaming platforms (Twitch, YouTube).
2. Attempt direct outreach to developer (shiratama.co contact) or publisher inc.ZOFE to explore acquisition, publishing partnership, or licensing for platform expansion (Switch, mobile).
3. Soft-launch re-marketing campaign on Steam and curated indie platforms (itch.io, GOG) targeting narrative-adventure and art-game communities; track conversion lift to validate localization ROI.

Generated 2026-08-20 from public signals and player reviews. Directional, not diligence.

## 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/1567800
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.