Pretty interesting and experimental game in a lot of ways, but for the most part, I found it a bit too frustrating and non-deterministic to keep my interest. The game is certainly varied and complex, and I enjoyed seeing all of the creative AIs and properties assigned to the letters: really made for interesting 'ant farm' or 'game of life' situations where you could just watch all the entities go and marvel at how they interact with each other (and with you). The gameplay was promising in that it provided some interesting puzzle situations...or at least, what I thought could be interesting puzzle situations. Most of the time it felt like I could see what ideal puzzle solution the game was going for, but whether I'd actually get that solution usually felt like it came down to sheer luck. Sometimes I'd get the AI to behave in a way that worked for me in a clever, satisfying way, sometimes the AI would just do random things that would stall the game out (even soft-locking it), sometimes the AI would just solve the puzzle for me without any intervention from me: it just felt so haphazard! Again, perhaps that haphazardness is part of the appeal and I'm just being fuddy-duddy for not embracing it, but I just couldn't fight the frustration from the randomness and non-deterministic AI ruining the pacing and fun.
Oh, and a silly nitpick: when the level says 'press any key to continue' upon completion, you actually can't press any key, because if you press r, it restarts the level instead of continuing, haha!