An image from VatLife - the polygonal environment, anyway. Check out the critters on the upper right, which seemed for a while to be about to take over the whole top surface. That line of critters did extend to the left for a while, under another critter evolved that messed up their scene.

I think the constant population selection scheme is unfair to the successful adaptations. But who said a-life is fair?

www.ripplingloop.com