It is very short (about 12 minutes?)
One of the puzzles lags even on my computer and probably crashes on weaker computers. Definitely want to fix that.
Very cute art. Especially star fox.
Those mushrooms can block me (lot of what look like invisible walls too where it looks like I can pass). The same appearance mushrooms don't block me elsewhere (or is it the invisible walls?). Felt a bit unnatural and immersion breaking.
Seems weird that you can just shoot things, but then some places where it would logically make sense to at least try, you don't.
If you stand still on a hole, it doesn't keep getting bigger. This is probably on purpose to prevent unexpected lockouts, but still strange.
Also, doesn't look like the holes heal on your return trips... And you teleport a few times.
Nice way to tell a story without words. That takes some planning.
I do like that you cut the repetition there and started to add color at that point. It was just enough to get the point across without feeling tedious.