This is really cool! I love the mood that the art and music create. You said I should be able to find out about jam's brother, but when I ask anyone about jam's brother, it says something like "I missed one... consider this an easter egg", and I can't seem to progress the dialog any further. I read the .txt files though, and it says there's dialog for that, so I assume its a bug. Its really cool and I loved the characters and the story. Great Job!
I had to change the capital "B" in bro to lowercase in the txt files and it worked.