As others have said, the interpretation of classic Spectrum computing is spot-on and really evokes the sense of the 'lost game' metanarrative outlined in the game page. The game and its dialogue follow the beats of the adventure game style of that time, right down to using the context text at the bottom of the screen that you see in a lot of the games of that era to instill dread into the player. Lovely attention to detail and plenty to explore, and multiple endings make this much more replayable. That this was made in GameMaker is an enormous achievement in itself. Complementing MAERE, this is another varied and well-executed take on a horror subgenre to be proud of.
Thanks for submitting Stay Indoors to the jam!