Just finished the part where you go through Bob's mind. As someone who has an alcoholic parent that part hit hard. I don't think I realized until now just how sad and dark this game can get.
The game keeps the tone light and fun overall, but there are these dark motifs in the background that make it very eerie. On one hand the level has this cheery pirate adventure theme, but there's also bottles and drinking-related figments everywhere, and the "drunken sailor" tune playing in the background. It's impressive that they managed to play both sides, thematically.
If you missed it, here's the basic story: Bob asks his Mom why she keeps going into the greenhouse. Eventually you find the picture book that reveals he found her dead among bottles of alcohol, and she had been hiding out in the greenhouse to conceal her drinking problem.