# Black Book

> Probable indie-scope game profile, served by indielist (https://indielist.games). Sales estimate uses a transparent Boxleiter-derived heuristic; its fixed display range is not a statistically validated confidence interval.

## Snapshot
- **Indie scope**: probable
- **Classification reason**: steam_store_genre:Indie
- **Classification evidence**: https://store.steampowered.com/app/1138660/
- **Primary genre**: Adventure
- **Release year**: 2021
- **Release date**: Aug 10, 2021
- **Platforms**: mac, windows
- **Genres**: Adventure, Indie, RPG, Strategy
- **Launch price**: $24.99 USD
- **Steam reviews**: 5,259
- **Positive review %**: 92%
- **Steam app**: https://store.steampowered.com/app/1138660

## Developer
- **Studio**: [Morteshka](https://indielist.games/studios/morteshka)

## Publisher
- **Name**: [HypeTrain Digital](https://indielist.games/publishers/hypetrain-digital)

## Sales estimate (white-box, version v1.0)

- **Units (median)**: 473,310 (range 283,986 – 662,634)
- **Net revenue (median)**: $6,756,163 USD
- **Boxleiter NB used**: 90
- **Algorithm version**: v1.0

### NB breakdown
- `base`: +50
- `year_2021`: +15
- `price_$25`: +5
- `positive_92%`: +10
- `genre_Adventure`: +10

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Source: indielist (https://indielist.games/games/black-book-1138660)
Estimates are not official sales data. Methodology: docs/sales-algorithm.md. Always verify large numbers with official sources before citing.