For a first game, this is seriously impressive congratulations! The fishing mechanic is simple but really satisfying, and it instantly reminded me of classics like the relaxing moments of fishing in Stardew Valley. There’s something timeless about casting, catching, and wanting to see what comes next.
It also brought back memories of a flash fishing game I used to play in university, where each round took you deeper and deeper into the ocean (tiny fishing if u want to search). Your game gave me that same sense of curiosity and progression, which is a huge achievement for a jam entry especially being your very first project. The art and presentation are charming, and with just a little polish (like adjusting fish speed or expanding the depth mechanic), it could easily grow into something much bigger.
I honestly think you’ve nailed it on your first try, and I’d love to see where you take it if you continue developing. Since your idea resonates so much with what I enjoy, maybe you’d also like to check out my own submitted game we approached things differently, but I think you’d find the spirit familiar.