Very interesting, and I liked this approach to metamorphosis. I would have liked to have seen a little more guidance/tutorial on the civilization level -I didn't ever figure out what a civilization was, or how to make one (I was assuming it was something to do with birds at the time, but reading the comments it seems it had to do with aliens which I hadn't encountered in my civilization level... so perhaps I was doing something wrong). Also I really liked the cozy vibe with the space whale, the music, and the construction, but I feel that somehow the gravity and the physics engine (sometimes being crushed at the center of a gravity well) worked against that in some way - maybe if whales have some intrinsic ability to phase/ignore gravity when a button is pressed that might ease back into the cozy vibe?