# Penumbra Overture

> 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/22180/
- **Primary genre**: Action
- **Release year**: 2009
- **Release date**: Mar 6, 2009
- **Platforms**: linux, mac, windows
- **Tags**: Horror, Adventure, First-Person, Indie, Survival Horror, Atmospheric, Psychological Horror, Singleplayer
- **Launch price**: $9.99 USD
- **Steam reviews**: 3,758
- **Positive review %**: 91%
- **Steam app**: https://store.steampowered.com/app/22180

## Developer
- **Studio**: [Frictional Games](https://indielist.games/studios/frictional-games)

## Publisher
- **Name**: [Frictional Games](https://indielist.games/publishers/frictional-games)

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

- **Units (median)**: 319,430 (range 191,658 – 447,202)
- **Net revenue (median)**: $1,822,760 USD
- **Boxleiter NB used**: 85
- **Algorithm version**: v1.0

### NB breakdown
- `base`: +50
- `year_2009`: +30
- `price_$10`: -5
- `positive_91%`: +10

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Source: indielist (https://indielist.games/games/penumbra-overture-22180)
Estimates are not official sales data. Methodology: docs/sales-algorithm.md. Always verify large numbers with official sources before citing.