(Thanks to the player before me -- because of your guys conversation above I got to finish this game!)
There is so much things I like about this game so I am gonna go one by one.
This game has such a good aesthetics. When I say aesthetics, I don't just mean visual, but the combination of design/mechanics, visual (environmental, UI, special effects), and sound. All builds a slightly apocalyptic, philosophical, and contemplative environment. They all echo with each others to strengthen the core idea of the game.
I really like your groups' take of the idea. The cover image strengthen the game's connection with the theme. Further more, I like your mentioning of nihilism there. I am not super familiar with it (I actually have to google just now), but if I am understanding correctly, it has a lot to do with the belief that life is meaningless. And you mentioning of cannot prove what is real outside of oneself gives me a suggestion of solipsism. -- which, both are very interesting as a context of the game. It does make me question who am I, both my role as a player in a digital world and my role in the game. It really feels like a game discussing what is real and what is not when I am watching a 3D environment from a 2D UI, which usually is the inverse because I am currently in a 3D world looking at a 2D screen.
Back to the game. My favorite mechanics is probably the simple puzzles (selection of image what is real, pick out the words, and trolley problem). All of them emphasize the theme of the game, and really well prepared for the last conversation I had with the humanoid in the screen. The notes and stories of all the crew members also comes back to asks the question again what is human and what is real here. The last bit to ask me physically finding a phone and scan the code was also insane. It really blew my mind, and made the game on screen bleed into real life.
More on the actual game, I do really appreciate you having the option to turn the screen shake off because I have motion sickness. But a slight bug, even when I turned it off, it do not work after I switch camera. When I turn the option on and off, the camera shakes again. Otherwise, there is no other complains I have.
Thanks for this amazing game! You guys should be proud of yourself.