I've now played every single game in the jam and, without a doubt, this is my favorite one. I've never played a fishing game quite like this, and I wasn't expecting it to be so addictive when I clicked. I caught 1,000 fish and bought countless upgrades but it still feels like I could master the game so much more. Every fish looks really wacky and colorful too. The audio enhances the experience quite well and feels quite polished.
The game is very replayable and fits the spirit of the jam perfectly. I'm shocked how well the color palette lent itself to such a wide array of fish. If I had some minor nitpicks, the prices are a bit off. One upgrade is only $14 yet very powerful. It's also too hard to survive consistently after buying a harpoon, IMO.
I will definitely buy this on Steam day 1 if you put it there.