Hi there! I'm Esh, and I try to play a bunch of stuff from here and GameoJolt on my channel.
I stumbled upon your game for the above video (yours is the first one played), and while I enjoyed the overall atmosphere, I do have some gripes.
The most glaring issue I can find is how cryptic the game is. Not so much in its directions as in its content. If this is as a result of being based on the Black Mirror episode, then fair, I am not familiar with the show. But that's precisely why it needs some extra context. Unless your piece is truly mindbendy and unique, having strange events be strange for the sake of being strange usually ends up more frustrating than scary.
Second, I don't know if it was a problem with my display as it appeared brighter after recording, but there is a difference between "dark" and "pitch black". There were many times I flat out could not see where to go in order to progress, which just causes irritation. But in fairness, I am unsure wether that is your game or my display, and I do apologize if the issue is on my end.
With these things out of the way, let me say that I DID very, very much enjoy the thick atmosphere the game provides, as well as the overall pixely look. It is instantly heavy and gloomy, and definitely raises a lot of questions that keep motivation going. So good job on that for certain!