# M.A.S.S. Builder

> Indie game profile, served by indielist (https://indielist.games). Sales estimate uses the white-box Boxleiter algorithm; numbers are approximate (±50%).

## Snapshot
- **Primary genre**: Action
- **Release year**: 2025
- **Release date**: Sep 14, 2025
- **Platforms**: windows
- **Tags**: Early Access, Action RPG, Mechs, Character Customization, Robots, Gun Customization, Indie, Hack and Slash
- **Launch price**: $24.99 USD
- **Steam reviews**: 4,071
- **Positive review %**: 86%
- **Steam app**: https://store.steampowered.com/app/956680

## Developer
- **Studio**: [Vermillion Digital](https://indielist.games/studios/vermillion-digital)

## Publisher
- **Name**: [Sekai Project](https://indielist.games/publishers/sekai-project)

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

- **Units (median)**: 223,905 (range 134,343 – 313,467)
- **Net revenue (median)**: $3,196,084 USD
- **Boxleiter NB used**: 55
- **Algorithm version**: v1.0

### NB breakdown
- `base`: +50
- `year_2025`: -10
- `price_$25`: +5
- `positive_86%`: +10

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Source: indielist (https://indielist.games/games/m-a-s-s-builder-956680)
Estimates are not official sales data. Methodology: docs/sales-algorithm.md. Always verify large numbers with official sources before citing.