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!
Recent Reviews:
Very Positive (12) - 100% of the 12 user reviews in the last 30 days are positive.
All Reviews:
Overwhelmingly Positive (1,785) - 96% of the 1,785 user reviews for this game are positive.
Release Date:
Mar 2, 2011
Developer:
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Buy The Zachtronics Puzzle Pack BUNDLE (?)

Includes 6 items: SpaceChem, Infinifactory, TIS-100, SHENZHEN I/O, Opus Magnum, EXAPUNKS

 

Recent updates View all (4)

February 10

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 did most of the actual work for this update.
  • Added a bunch of new user-created puzzles to ResearchNet.
  • Added a right-click menu to the inside of reactors with options to swap colors, mirror the program, and reset the contents of the reactor.
  • Added an option to the options menu to show bonder priority in reactors.
  • Improved the performance of the fastest playback speed in non-defense puzzles so that it now runs as fast as your computer can handle.
  • Enabled all of the "Greek symbol elements" in ResearchNet puzzles.
  • Added the ability to add bonds to the "unknown element" symbol in molecule annotations.
  • Changed reactors to be processed in topological order so that there is no longer a need to consider "reactor priority" when optimizing your solutions.
  • Changed the video recording logic to prevent videos from being too short or too long.
  • Fixed a bug where random inputs varied depending on your operating system. The new behavior should be identical to the old behavior for Windows users. Impossible scores will be removed from leaderboards in the coming days.
  • Fixed some obscure bugs that have somehow persisted over the years, including missed collisions, asymmetrical collisions, "molecule smashing," and "telekinesis."
  • Fixed a bug where you could delete symbols while a solution was running.
  • Fixed a bug where leaderboards would sometimes be empty for players with computers set to non-English locales.
  • Fixed a bug where wrong outputs were sometimes accepted.
  • Fixed a bug where you could lose after winning a defense puzzle.
  • Fixed a broken YouTube link for the optional tutorial video.
  • Removed all YouTube upload functionality from the game.
25 comments Read more

November 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.
1 comments Read more

About This Game

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! Streamline your designs to meet production quotas and survive encounters with the sinister threats that plague SpaceChem.

KEY FEATURES:

  • Over Fifty Mind-bending Puzzles!
  • An original soundtrack by Evan Le Ny, whose music was featured in The Codex of Alchemical Engineering!
  • Twenty challenging achievements!

System Requirements

Windows
Mac OS X
SteamOS + Linux
    • OS: Windows XP SP3 / Vista / 7 / 8 / 10
    • Processor: 2.0 GHz Processor
    • Memory: 1GB RAM
    • Hard Disk Space: 300MB
    • Video Card: frame buffer support recommended
    • OS: OS X 10.7 or later
    • Processor: 2.0 GHz Processor
    • Memory: 1GB RAM
    • Graphics: frame buffer support recommended
    • Hard Drive: 300MB
    • Additional: Mono 2.6 or later
    • OS: Ubuntu 12.04 LTS, fully updated
    • Processor: 2.0 GHz Processor
    • Memory: 1 GB RAM
    • Graphics: frame buffer support recommended
    • Hard Drive: 300 MB
    • Other: Mono 2.6 or later

What Curators Say

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