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A game made for all those who love molecular chemistry or are willing to learn its fundamentals. MOLEK-SYNTEZ made by Zachtronics is now available on GOG.COM DRM-free.

In the far future, as a tenant of a small flat in Romania, you spend time programing a molecular synthesizer and playing solitaire. What sounds monotonous at first, can be quite addictive – molecular chemistry is a science full of surprises. By combining knowledge and imagination you can convert ordinary industry chemicals into something completely new…
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Starmaker: Opus Magnum is the best. The bestestestestestest. Amazing. Glorious. Sublime.

Pistols at noon (UTC +2)
I will concede that Opus Magnum is the best. Aside from Infinifactory of course. But otherwise it's the best.