Nice. I may have found a glitch. Or maybe not.
While playing, I was trying to get everything to maximum stats.
Normally, one would have to fill up the evolve bar before the option comes up.
However, if you click the hotspot that the button registers, regardless of it is available or not, the Evolve menu will still pop up allowing you to evolve anyway.
Also, funny thing. Despite Evolving to a new form was already maxed out. I was able to evolve further back into the amoeba creature and go through the evolution loop again.
Otherwise, nice game and hope you make more.