The selling point of this experience is the story and the aesthetic. The 3D work is very nice (with the exception of the visible border on the right), and you definitely feel sad for the MC.
Now, there are a few important issues: The first one is that doing anything takes too long, the second one is that there's not much to do anyway. This is more of a visual novel than a game, though not a bad one!
Things that are too slow: Walking, interacting or fixing things, dialogue, finding stuff, transitions (fade-in, dade-out).
Mechanically-wise: The martian slow walk is nice, but everything is too far apart. There's no way to tell what you can interact with, or where it is. When I had to obtain a mineral sample, there was no indication that the drill had spawned beside the ship.
On the story: For the most part it was great, the cutscene in the space ship, the dialogue when landing, etc. But at one point it's mentioned that the planet is alive, yet that is never elaborated on.
I believe too much focus and time was likely spent on dialogue systems, low-poly models, animations, etc., and not so much on gameplay.
Regardless, congrats! If taken as a interactive short movie, it's definitely going somewhere.