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M.A.S.S. BuilderSteam players
As of
Players, last 48 hours30-day average
9 players10 of 30 days observed
Data coverage| Data | Collected | Observed since | Last success |
|---|---|---|---|
| News and patch notes | Every 7 days (cool tier) | 21 Oct 2026 | |
| Player counts | Every day (cool tier) | 19 Oct 2026 | |
| Store details | Weekly, and when Steam reports a change | 19 Oct 2026 |
Busier games are polled more often. Source: Steam Web API. Not affiliated with Valve.
M.A.S.S. Builder −30% 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.
| Poll | Players |
|---|---|
| 00:29 UTC | 15 |
| 28 Oct, 00:14 UTC | 12 |
Screenshots
Price and Sale HistoryPrice now
$17.49−30% on sale, ends 9 Nov 2026
Lowest we've seen
$17.49−30%, 28 Oct 2026
Sales we've seen
1Deepest −30%, $17.49
| From | Price | Usual | Off |
|---|---|---|---|
| 28 Oct 2026 | $17.49 | $24.99 | −30% |
| 24 Oct 2026 | $24.99 | $24.99 | — |
| Sale | Length | Off | Price | Usual |
|---|---|---|---|---|
| From 28 Oct 2026On now, ends 9 Nov | 1 day | −30% | $17.49 | $24.99 |
−30% sale on now: So far players have averaged 60% more than the week before.
| Sale | Off | During | Change |
|---|---|---|---|
| From 28 Oct 2026On now | −30% | 15+60% | On now |
Average players from our own counts over the 7 days before each sale, while it ran, and the 7 days after, kept clear of the sales either side. Steam’s big seasonal sales lift the whole store, so not every rise is this discount alone. How we count
