First off: the youtube link on your submission page is a "mail:to" link (or maybe my computer is just being weird) but I was not able to open it. The one on your project page works, though.
I love your story idea; I think it walks a very fine line of being unique and well thought through, but also very simple and easy to understand and relate to. Musically, my first thought was "this sounds like something I'd hear in Civilization 2 or 3 while aimlessly exploring the ocean." Take that as you will, but to me that seems like your ideas were translated as intended.
My only critique is song length, and honestly I'm still a bit on the fence on that one. I would say you did thoroughly explore the motifs that you established. The variation in percussive effects, velocity, instruments changing back and forth, etc all do keep things moving in a good direction; it's just.... very, very, slowwwww. Admittedly, this is partially a me problem as I tend to write music that changes directions every 15 seconds - honestly, I don't know that additional variation in chord/key changes, etc would really add a lot of value to what you have here. Some of the charm is in the length and repetitive nature, and the more I re-listen and talk it through, I think you did a good job of varying things with what you used to keep things from getting stale. So I guess just ignore this paragraph, I'm good with it 👍 lmao
Nice work overall, and nice artwork too!