SpaceChem
In the codexIndieSimulation

SpaceChem

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!

DEV: ZachtronicsPUB: ZachtronicsAppID 92800

Is SpaceChem still being updated? — the short answer, with the evidence.

92.9
Excellent

Elixir Rating

92.2% of 5,098 Steam reviews are positive, which after adjusting for sample size gives a reception score of 91.4. Nothing we would call a substantial update has landed in six months, but the developers were last heard 3 months ago — adding 1.5.

reception 91.4·support +1.5·Excellent

Computed from Steam’s own review tally and observable developer activity — never from anyone’s opinion of the game. How this is calculated

Should you look into this?

From Steam's own record

Current price

$4.99$9.99−50%

Development

Insufficient evidence

Last heard from developers

3 months ago

Historical posting rhythm

not yet established

Substantial updates (6 mo)

0

Current silence

cannot be judged

Our news coverage needs a fresh check; missing posts are not evidence that development has stopped. It is currently 50% below its usual price.

Last successful news check: Oct 3, 2026, 2:05 PM UTC. This is when we checked Steam, separate from when the developer last posted. A fresh check is needed before judging current activity.

We hold a thin slice of this game's announcement history, so its normal rhythm can't be established. That is a limit of our record, not evidence about the game.

Recent Transmissions

30 entries in codex

Community AnnouncementsJul 19, 2026
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.

Community AnnouncementsJul 5, 2022
Last Call BBS - The last game by Zachtronics!

Boot up your Z5 Powerlance and dial into Last Call BBS, the last game from Zachtronics! The Barkeep’s loaded up his retro computer with a full set of puzzle games for you to download and play. No need to worry about copy protection, they’re…

Community AnnouncementsAug 31, 2020
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.

GamingOnLinuxJul 27, 2020
You can now get the enhanced SpaceChem Community Edition on Steam

SpaceChem, the classic Zachtronics design-based puzzle game not only got a sweet update recently to improve the tech behind the game, it's also now super easy to grab the updated community version.

Community AnnouncementsJul 15, 2020
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…

Rock, Paper, ShotgunJun 8, 2020
Satisfactory review (early access)

Satisfactory review A first-person industrialism sim that sees you wrestling with machinery on an alien planet to create the perfect factory. * Developer: Coffee Stain Studios; * Publisher: Coffee Stain Publishing; * Release: Out now; * On:…

Community AnnouncementsFeb 28, 2020
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…

Rock, Paper, ShotgunNov 5, 2019
MOLEK-SYNTEZ is a new Zachtronics game about making drugs in a cold Romanian apartment

It is so likeZach to release a Zachlike (just a Zach to his friends) about creating drugs in a small Romanian apartment. Molek-Syntez is now squatting on early access, trying to hook you in with the good stuff as you program your molecular …

Rock, Paper, ShotgunJun 18, 2019
Zach-Like comes to Steam free with loads of game-like extras

Zach-like, the book about Zachlikes by Zach Barth, creator of the genre, is now free albeit notably less papery now. Zachtronics’s previously Kickstarter-exclusive book was a collection of design documents from the creator of Spaceche…

Community AnnouncementsMay 17, 2019
UPDATE: Bug fixes (v1014)

Today's update includes the following: Fixed a crash when starting a pipeline with too many reactors. Removed impossible scores from the histograms for the "Swapite" journal puzzle. Bumped the version number from 1013 to 1014. When things s…

Community AnnouncementsFeb 28, 2019
UPDATE: Miscellaneous bug fixes

Today's update includes the following changes: Fixed a bug in production inputs with variations of the same molecule. Fixed a bug with reactors being slightly too roomy at the right and bottom. Fixed a bug with the Reset option and "ancient…

Community AnnouncementsFeb 10, 2019
UPDATE: SpaceChem community update (v1013)

Can you believe it's been over eight years since SpaceChem first launched? Today we're releasing a community-driven update featuring a host of bug fixes, improvements, and new journal puzzles. Special thanks to 12345ieee and Csaboka, who di…

Read this patch for

Rock, Paper, ShotgunFeb 7, 2019
Zachtronics book Zach-Like shows how the puzzle sausage gets made

I reckon most of the RPS Treehouse gang love us some Zachlikes, since well before Alice Prime coined the term in 2016 in reference to Shenzhen I/O. Puzzlemeister Zach Barth likes the term too, as he’s borrowed it for the title of his …

Community AnnouncementsNov 7, 2018
UPDATE: Fixing a crash on Mac when importing custom puzzles

Today's update fixes a crash on Mac when importing custom puzzles. No other platforms should be affected.

Community AnnouncementsOct 23, 2018
UPDATE: SpaceChem is back on Mac!

After a few years of SpaceChem not being officially supported on Mac, we've finally gotten around to getting it working again! It ought to work out of the box for everyone now, and not require Mono to be installed separately or anything lik…

Rock, Paper, ShotgunSep 12, 2018
How Exapunks represents hacking without limits

This is The Mechanic, where Alex Wiltshire invites developers to discuss the difficult journeys they ve taken to make their games. This time, Exapunks . It s pretty obvious that the excellent Exapunks is a game about hacking. Specifically, …

Rock, Paper, ShotgunSep 13, 2016
SpaceChem & TIS-100 Creator Announces SHENZEN I/O

A proposal: puzzles games focused on assembling or programming – or both – should be called Zachlikes. Following the atom-assembling SpecChem, production line ’em up Infinifactory, and the computer-programming TIS-100, Zac…

PC GamerAug 21, 2015
What are the hardest PC games?

survey fridays Every week we ask you to rank a series or just reminisce about PC games in a not-very-scientific survey. Look for the survey link in our  Twitter and Facebook feeds each week, and the results every Friday. Prev…

Rock, Paper, ShotgunJul 21, 2015
New Zachtronics Puzzler TIS-100 Out Of Early Access

SpaceChem and Infinifactory creator Zach Barth has released his latest thing-making puzzle game, which sits somewhere between fiddling with chemistry and building automated factories. TIS-100 is an assembly programming puzzler, having you l…

Community AnnouncementsJun 30, 2015
Infinifactory has left Early Access!

If you liked SpaceChem there's a good chance you'll love Infinifactory, the latest design-based puzzle game from Zachtronics! LIKE SPACECHEM… IN 3D! Design and run factories in a first-person, fully 3D environment. HISTOGRAMS ARE BACK! Opti…

Community AnnouncementsJun 30, 2015
Infinifactory has left Early Access!

If you liked SpaceChem there's a good chance you'll love Infinifactory, the latest design-based puzzle game from Zachtronics! LIKE SPACECHEM… IN 3D! Design and run factories in a first-person, fully 3D environment. HISTOGRAMS ARE BACK! Opti…

Rock, Paper, ShotgunJun 1, 2015
SpaceChem Dev s TIS-100: A Programming Puzzler

After having folks design molecules in SpaceChem and automated plants in Infinifactory, Zachtronics are back with another puzzle game of complex systems. What comes after atoms and factories, the whole dang universe? The multiverse? Nah, yo…

Rock, Paper, ShotgunMay 8, 2015
The 25 Best Puzzle Games Ever Made

The world’s most accurate ranking of the 25 best puzzle games ever to reach a computer. Plucking the peak of PC puzzling, we break down what makes them so special, and put them in the correct order. Read on for more time travel, rearr…

PC GamerOct 11, 2014
Infinifactory is "like SpaceChem...but in 3D"

Zachary Barth's Infiniminer was Minecraft before Minecraft was Minecraft, kickstarting the whole cubey, block-digging genre that has made other people lots of money over the years. He's been sticking to 2D art for more recent games suc…

Rock, Paper, ShotgunOct 10, 2014
Infinifactory: By The Maker Of SpaceChem And Infiniminer

Zachtronics has linked the SpaceChem molecule to the Infiniminer molecule to create and announce their new game: Infinifactory. It’s “Like SpaceChem… In 3D!” says the site, which sounds like a very good thing when yo…

Rock, Paper, ShotgunJul 22, 2014
H2O: Chemical Puzzler Sokobond Now On Steam

Now, let’s be clear. When I say “Hey, Sokobond has been out since September but now it’s on Steam,” I don’t mean to imply that you should refuse to buy games not on Steam, and I don’t want to encourage pe…

Product ReleaseSep 18, 2013
Now Available - Ironclad Tactics

Ironclad Tactics, from the creators of Spacechem is Now Available on Steam! Ironclad Tactics is a fast-paced, card-based tactics game set in an alternate history Civil War - with steam-powered military robots! Experience unique gameplay, wi…

AnnouncementAug 21, 2012
Daily Deal - SpaceChem, 75% off!

Today's Deal: Save 75% off the SpaceChem! Look for the deals each day on the front page of Steam. Or follow us on twitter or Facebook for instant notifications wherever you are!

Rock, Paper, ShotgunAug 15, 2012
Humble Android Bundle #3 Is For PC, Mac, Linux Too

After a brief foray into the world of music, the Humble folks are back with their third Android bundle. Which is also a PC, Linux and Mac bundle too. Buy them, and you’ll get versions for each. In there this time are BIT.TRIP.BEAT, Fi…