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As of
30-day average
62 players2 of 30 days observed
| Data | Collected | Observed since | Last success |
|---|---|---|---|
| News and patch notes | Every 12 hours (warm tier) | 10 Nov 2026 | |
| Player counts | Every 4 hours (warm tier) | 10 Nov 2026 | |
| Store details | Every 3 hours, and when Steam reports a change (warm tier) | 19 Oct 2026 |
Busier games are polled more often. Source: Steam Web API. Not affiliated with Valve.
Gas reaction simulator. Build the ultimate jet engine, solve puzzles, or just make everything explode!

Price now
$5.09−15% on sale, ends 17 Nov 2026
Lowest we've seen
$5.09−15%, 10 Nov 2026
Sales we've seen
1Deepest −15%, $5.09
| Sale | Length | Off | Price | Usual |
|---|---|---|---|---|
| From 10 Nov 2026On now, ends 17 Nov | 1 day | −15% | $5.09 | $5.99 |
US Steam store prices, saved each time our store check sees a change. Our records start on 21 Oct 2026, so earlier sales are not listed. A sale is dated from the first check that saw it (usually within an hour of Steam changing the price) to the end date Steam gave. How we count
| Hour | Peak | Average | Polls |
|---|---|---|---|
| 22:00 UTC | 73 | 73 | 1 |
| 21:00 UTC | 78 | 78 | 1 |
| 20:00 UTC | 73 | 73 | 1 |
| 19:00 UTC | 77 | 77 | 1 |
| 18:00 UTC | 82 | 82 | 1 |
| 17:00 UTC | 75 | 75 | 1 |
| 13:00 UTC | 42 | 42 | 1 |
| 09:00 UTC | 36 | 36 | 1 |
| 05:00 UTC | 49 | 49 | 1 |
| 04:00 UTC | 61 | 61 | 1 |
| 03:00 UTC | 64 | 64 | 1 |
| 02:00 UTC | 64 | 64 | 1 |
| 01:00 UTC | 76 | 76 | 1 |
| 00:00 UTC | 65 | 65 | 1 |
| 10 Nov, 22:00 UTC | 82 | 82 | 1 |
| 10 Nov, 21:00 UTC | 73 | 73 | 1 |
| 10 Nov, 20:00 UTC | 71 | 71 | 1 |
| 10 Nov, 19:00 UTC | 73 | 73 | 1 |
| 10 Nov, 18:00 UTC | 75 | 75 | 1 |
| 10 Nov, 17:00 UTC | 74 | 74 | 1 |
| 10 Nov, 16:00 UTC | 60 | 60 | 1 |
| 10 Nov, 12:00 UTC | 15 | 15 | 1 |
| 10 Nov, 11:00 UTC | 1 | 1 | 1 |