More just an interactive story than a game but well written and with much content and good worldbuilding. Got ending B. Unsure whether 3 passwords are too much, they hinder progress (happened to Mentel, too). I liked that there were some different images which supported the story.
Coming from text adventures and choose-your-own-adventure, I would have expected more opportunities to branch. But that would have meant more work and a less consistent story. (I have done some myself and it gets cluttered quickly ;-) ).