SpaceChem
Live player count and Steam charts
Zachtronics is back with an ambitious new design-based puzzle game. Take on the role of a Reactor Engineer working for SpaceChem, the leading chemical synthesizer for frontier colonies. Construct elaborate factories to transform raw materials into valuable chemical products!
Player history
Each point is the highest number of players online in that month (UTC). History before July 14, 2026 is imported; everything after is our own readings. Zoom in for finer detail.
Monthly player counts
| Month | Avg players | Gain | % gain | Peak |
|---|---|---|---|---|
| Jul 2026 * | 12 | 0 | 0.0% | 25 |
| Jun 2026 | 12 | +2 | +20.0% | 26 |
| May 2026 | 10 | +1 | +11.1% | 22 |
| Apr 2026 | 9 | -2 | -18.2% | 27 |
| Mar 2026 | 11 | -1 | -8.3% | 26 |
| Feb 2026 | 12 | +1 | +9.1% | 32 |
| Jan 2026 | 11 | +1 | +10.0% | 24 |
| Dec 2025 | 10 | +1 | +11.1% | 24 |
| Nov 2025 | 9 | -2 | -18.2% | 19 |
| Oct 2025 | 11 | +1 | +10.0% | 26 |
| Sep 2025 | 10 | -2 | -16.7% | 21 |
| Aug 2025 | 12 | -8 | -40.0% | 28 |
* current month, data so far
Recent updates
- Jul 19, 2026UPDATE: Windowing improvements
- Jul 5, 2022Last Call BBS - The last game by Zachtronics!
- Aug 31, 2020UPDATE: Minor bug fixes
- Jul 15, 2020UPDATE: 64-bit Mac Support (v1016)
- Feb 28, 2020UPDATE: More bug fixes (v1015)
- May 17, 2019UPDATE: Bug fixes (v1014)
Audience
Language mix of 100 Steam reviews spanning 333 days — a rough proxy for where the player base is.
Achievements
Every achievement in the game, ordered from most to least earned (#1 is the one the most players have). Height is the share of all players who have it; the dashed line is the median. Global rates from Steam.
