I have to disagree with both of the below comments: simple, graphical, absolutely lovely. Pulled me in right off the front page. High fives, this is awesome.
My only critique would be that in the blue tall terrarium there are some extremely tiny blue specks above the pattern which seem out of place. I think you'd be better off with just the two rows of circles rather than those individual pixels as well.
Nice colors, but yeah, it lacks a story, or something to catch the eye.
Could need soemthing living in them, like ant colonies or something.
Absolutely brilliant. I love your style. +buddy!