I'd seen Clickventures referred to on the IFDB but not actually encountered one until now.
This is a whimsical short game about trying to evolve into a duck. I'm no scientist but I'm fairly sure that some of the evolutionary pathways described are slightly less than accurate, which is part of the extremely silly fun of it. I also enjoyed the fact that there is a side branch of the story where you can spend several turns as a (Spoiler - click to show)capybara, a creature which I am quite fond of, although that story doesn't end well.
After numerous playthroughs, and a rough idea of which pathways were dead ends, I (Spoiler - click to show)eventually managed to evolve into a duck via the most unlikely route possible.