MechsAction RPGCharacter CustomizationRobotsGun CustomizationIndieHack and SlashSci-fi
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.
- Developer
- Vermillion Digital
- Publisher
- Sekai Project
- Release date
- September 14, 2025
- Platforms
- Windows
- AppID
- 956680
Is anyone still playing M.A.S.S. Builder?
Are people playing it now?
A few: 11 players right now. 21% below its 7-day average.
With this few players online, multiplayer matches may take a while.
Observed 2026-11-10 20:17 UTC
Which languages?
Available in 5 languages.
What do players say?
85% of 3,741 reviews are positive. Steam rating: Very Positive.
How much is it in the United States store?
$24.99, not on sale right now.
Playing now
11
24h peak
11
Reviews
Very Positive · 85% · 3,741 reviews
Price
$24.99
Recent news
No news in the last 30 days.
Language support
English, Japanese, Simplified Chinese, Thai, Traditional Chinese
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