One of the best idle games I played (or rather "idled") so far. It's pretty addictive and can be educational, too.
I like that there's so much to do here. Buying upgrades, selling molecules, evolving, gathering knowledge... it keeps the game interesting.
There's still a bug in the upgrades section, though: I cannot chose a different element to use for buying upgrades. The combo box is there, but whatever molecule I chose, the box ends up empty and the amount stays the same (indicating that it didn't change). It's a bit annoying when trying to farm molecules for the knowledge section.