How many people are playing M.A.S.S. Builder right now?

M.A.S.S. Builder has 9 players on Steam right now, with a 24-hour peak of 13 and an all-time peak of 480 on Jul 2020.

What is the all-time peak player count of M.A.S.S. Builder?

480 concurrent players on Jul 2020.

When was M.A.S.S. Builder released on Steam?

M.A.S.S. Builder was released on Steam on 15 Sep 2025.

M.A.S.S. Builder Events

No announcements yet · from M.A.S.S. Builder’s Steam news feed

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This developer has not posted announcements to Steam, or we have not read their feed yet.

Announcements are the developer’s own posts to the game’s Steam news feed: updates and their patch notes, in-game events, releases and sales. The important ones are marked on the players chart.