Thanks for the detailed feedback! To make good graphics you have to use detailed textures that unfortunately cost space. The high-quality audio files are large too.
About the letters and some other bugs, we managed to fix them only a few minutes after the jam ended.
We made it clear that this is a narrative experience game, and it's all about enjoying the fully voiced dialogue, with music and sound effects.
If we had more time, we would definitely add some more things you can investigate yourself.
Thanks again for trying our game :) I like your game by the way.