M.A.S.S. Builder
2025 · Vermillion Digital
Has it aged?Why ↓
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.
The publisher’s description, from its Steam store page.
What it looks like
the trailer, then the store's own shots
Common questions
What everyone else said
we link, we don't reprintHas it aged?
How does it hold up today? Based on recent reviews, how opinions have changed since launch, player activity and updates.
3 / 5
Recent reviews
58%positive (86% all-time)
74reviews in the last 6 months
% positive each month, last 4 years.
Reviews via Steam ↗Player activity
14playing at once, on average
−11%fewer than a year ago
Peak: 119 in Sept 2019.
Player counts via SteamCharts ↗Since launch
57%positive in its first year
58%positive in the last 6 months
As well liked as at launch.
Last updated
Sept 2025 last update from the developer
No update in the last year.