SpaceChem is an obscenely addictive, design-based puzzle game about building machines and fighting monsters in the name of science! 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.

Tech|Rogue says

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This game will make you alternate between feeling like a moron and a complete genius.

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Highest Rated (3 agree) 9/10

I'm at a point in this game where I can play this for very long amounts of time. This is a good thing. I get my next puzzle, close the game in disgust ("HTF am I supposed to do that!?!") then proceed to spend the next few hours or days thinking about how to solve the puzzle. It's a game you keep playing, even when you're not playing. Then it gets worse, you finally find a solution, but it seem inelegant. You are using too many components, it's taking way too many cycles. And the process begins again…

Oct 26 2011 by hackenstaben