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.

SpaceChem How To Trailer
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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!
| Date observed | Region | Regular price | Final price | Discount |
|---|---|---|---|---|
| US · USD | $9.99 | $9.99 | — | |
| US · USD | $9.99 | $9.99 | — | |
| US · USD | $9.99 | $9.99 | — |
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.

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 all fully cracked and ready to enjoy!
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.
SpaceChem How To Trailer