SpaceChem
Playing now
7−8 vs. yesterday
0.8%of peak
All-time peak
866Jun 2014
Update cadence · public branch
PICS live
49 days
Since last public build
—
Median interval
Usually Sun, 01:00–03:00 UTC
0
Builds in 30 days
0 with patch notes · 0 unannounced
—
Downloaded in 30 days
Quiet · no builds in 30 days
All 7 builds since 2020 · UTC
When Zachtronics ships
036912151821
MonTue
Wed
Thu
Fri
Sat
Sun
FewerMorePeak cell: Tue 01:00 · 1 builds
9 published · from the developer’s Steam news feed
Patch notes
| Published | Title | Build |
|---|---|---|
| UPDATE: Windowing improvements Today's update makes a few improvements to the game's windowing behavior, allowing it to be arbitrarily resized and toggled in and out of fullscreen by pressing Alt-Enter. It also fixes a typo (!) in the final puzzle. | 24286672 | |
| UPDATE: Minor bug fixes Today's update fixes a minor bug where typing a forward slash into a text field would paste the contents of your clipboard instead, in addition to some tweaks to make the "mirror vertically" feature more intelligent. | — | |
| UPDATE: 64-bit Mac Support (v1016) Today's update brings SpaceChem into the future with an upgrade from SDL 1.2 to SDL 2.0 and 64-bit builds for macOS so that the game now runs on macOS Catalina. It looks like it also contains a few fixes for obscure crashes and scroll wheel support for some of the game's UI. | — | |
| UPDATE: More bug fixes (v1015) Today's update is all bug fixes, brought over from the game's unofficial "community edition": · Fixed a Windows-only display bug when using a high-DPI monitor. · Fixed an exploit where you could disconnect a pipe from its reactor. · Fixed a crash when loading invalid ResearchNet puzzles with negative counts. · Fixed a crash when displaying text with an ellipsis but not enough space to fit it. ·… | — | |
SpaceChem
Builds
| Date | Day | Time | Patch title | Build ID | Branch | Depots | Download Δ |
|---|---|---|---|---|---|---|---|
| 6 Sep 2026new | Sun | 19:57 | No patch notes · unannounced build | 25156120 | community-unstable | 3 | — |
| 30 Aug 2026 | Sun | 06:14 | No patch notes · unannounced build | 25018190 | community-unstable | 3 | — |
| 22 Aug 2026 | Sat | 17:33 | No patch notes · unannounced build | 24882091 | community-edition | 3 | — |
| 19 Jul 2026 | Sun | 20:23 | UPDATE: Windowing improvements | 24286672 | public | 3 | — |
| 30 Jan 2024 |