While I do realize this game is not horror or thriller, as an avid enjoyer of the eerie I must tell you: this game has hit the right spot.
I would definitely suggest you invest more in this kind of theme: based on this game, I can tell you can nail that particular feeling.
While the gameplay can be related to that of a roguelike, the continuous labels that kept popping up, the music, the strange structures you could find around made me immediately think of one of those games which at some point down the line some youtuber is going to make an essay of sorts on how deep of a rabbit hole its lore is.
So, as for me, big thumbs up for getting that feeling right! I would suggest in the future you change the contrast of the labels in the menu dialogues for accessibility purposes, but great job for reaching that distinct feeling.
All the best!