Only made it to day 80.
This is not my kind of game, but even so I found the mystery intriguing. I'd like it more if the text screen was bigger (in relation to the game screen). It felt like a lot of unecessary scrolling. It'd also be nice to view how much water/food you have before deciding how much you want to give your crew.
The atmosphere was very good, though, and I really wanted to confront Simmons even before his experiments.