I love fishing so it was interesting to see how you interepted it. Lack of effects made it a little hard to recognize when I was doing something right or not. If you added a splash sound, a casting sound, and a atmospheric track that feels a "bubbly" but also mute, it would be a huge step up in qualilty without even making changes to your art.
There is a softlock I encountered where after obtaining max casting range, I cast completely off the map. It was funny and luckily happened after I played the majority of it (all upgrades collected and purchased).
Just a fun little game. Congrats!