Vermillion Digital
M.A.S.S. Builder

At a glance
Genres
Play modes
- co-op mode
- single-player video game
Game facts
Developers
- Vermillion Digital
Publishers
- Sekai Project
Platforms
Players by platform
- Microsoft Windows*
- Maximum players (mode unspecified)
- 1*
Content classifications
- ESRB · Microsoft Windows*
- Classification
- T - Teen*
Compatibility and community reports
- Controller support · 2026-06-27*
- Controller support
- Full*
- Steam Deck · 2026-06-27*
- Compatibility category
- Playable*
- Linux · Community reports · 2026-06-27*
- Community Linux compatibility tier
- Gold*
- Reports
- 19*
- Community confidence
- good*
System requirements
- Windows · Minimum*
- Operating system
- Windows 7, Windows 8.1, Windows 10 (64-bit versions only)*
- Processor alternatives
- Intel Core i5 or better / AMD Phenom II X3 or better*
- Memory
- 8 GB RAM*
- Graphics alternatives
- NVIDIA GeForce GTX 1050 or better / AMD Radeon RX 560 or better*
- Storage
- 3 GB available space*
- Audio hardware
- DirectSound Compatible*
- Conditions
- Requires a 64-bit processor and operating system*
Steam version platforms
- Windows*
- Supported
- Yes*
- macOS*
- Supported
- No*
- Linux*
- Supported
- No*
Interface languages
- English*
- Japanese*
- Simplified Chinese*
- Thai*
- Traditional Chinese*
Game features
- Single-player*
- Multi-player*
- Co-op*
- Online Co-op*
- Full controller support*
- Steam Cloud*
- Family Sharing*
Store genres
- Action*
- Indie*
- RPG*
- Strategy*
Screenshots



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* Provisional data