
From what Im getting is those are the save points right? But unlike save point where you save up until the time where you saved, but it saved the whole session. For example, if you put the cassette during the beginning, the whole game is saved for you even if you put it on the beginning. I hope this makes sense!

Tape = saves/retrieves characters memories
Cassette player = saves/retrieves the map's game progress
More detailed explanation by the author: https://www.mangago.zone/read-manga/dreadful_night/uu/br_chapter-253924/pg-1/
Simplified explanation by me: https://docs.google.com/document/d/1fyfND0KcEKCLjX-4X9l66b9U6diWfaakpy1NOWcA8mY/edit?usp=sharing
I hope this helps! (●'◡'●)ノ
Can someone explain the mechanics of the cassettes? I never really understood it in the beginning and now they keep bringing it up but I'm getting more and more confused