M.A.S.S. Builder
Commander, customize and build your Mechanical Assault Skeleton Suit (M.A.S.S.) and lead the fight against an alien invasion bent on exterminating the human race. The fate of humanity is in your hands.
86.1Rating
0Content
0Achievements
About This Game
M.A.S.S. Builder is a action/indie game with both single-player and multiplayer modes, developed by Vermillion Digital and released in 2025. With an estimated 132,000 copies sold, it is considered a mid-tier seller on Steam. With 4k reviews on Steam, it stands as a game with a solid review base on Steam. Community ratings across Steam average 86.1/100 — a strong reception overall. Players commonly describe it as Mechs, Action RPG, Character Customization, Robots and Gun Customization.
Media
▶
User Reviews
86.1
Overall Score / 100
8.6/10
Steam (4014 rev)
Similar Games
Game Information
Release Date
September 14, 2025
Developer
Vermillion Digital
Publisher
Sekai Project
Platforms
Windows
Controller
Full Support
Price
$24.99
Analytics & Metrics
Copies Sold (VISE)
132.3K
(105.8K - 158.8K) VRI ScoreLearning
81.4
Not for everyone, but if you like the genre then it's good
VRI (Vorythic Recommendation Index) a single number indicating whether the game is worth your time. Built from game data, putting real players' opinions above progressive 'critics'.
Get the Game
Genres & Categories
Genres
Action
Indie
RPG
Strategy
Categories
Single-player
Multi-player
Co-op
Online Co-op
Full controller support
Steam Cloud
Family Sharing
Tags
Mechs
Action RPG
Character Customization
Robots
Gun Customization
Indie
Hack and Slash
Sci-fi
Anime
Shooter
Action
Singleplayer
RPG
Futuristic
Multiplayer
Third-Person Shooter
Combat
Third Person
Post-apocalyptic
Crowdfunded
Supported Languages
Text Only
English
Japanese
Simplified Chinese
Thai
Traditional Chinese
System Requirements
🪟 Windows
🍎 Mac
🐧 Linux
Minimum
Recommended
Minimum:
- Requires a 64-bit processor and operating system
- OS *: Windows 7, Windows 8.1, Windows 10 (64-bit versions only)
- Processor: Intel Core i5 or better / AMD Phenom II X3 or better
- Memory: 8 GB RAM
- Graphics: NVIDIA GeForce GTX 1050 or better / AMD Radeon RX 560 or better
- Storage: 3 GB available space
- Sound Card: DirectSound Compatible
Recommended:
- Requires a 64-bit processor and operating system
Minimum:
Recommended:
Minimum:
Recommended:
Legal Notice
©2017-2023 VERMILLION DIGITAL CO., LTD. ALL RIGHTS RESERVED.