This is an interesting one. More clarity on how you actually catch the fish would have been great. Especially since you can press R to return. Does the return mean you leave with the fish or does it mean you let the fish go? I think the HP for your hook also adds to this confusion. If your hook takes damage as you are catching a fish that would seem to indicate that you don't want to hit any fish. Something like ridiculous fishing fixes this by making you return immediately upon hitting any fish, so you want to avoid small value ones but its also clear how you get fish on the hook. Making things more discernible also would have helped. Instead of calling it HP, something like "line strength" or "line integrity" would have made it more clear as to why it goes down as you are pulling the fish up. Same with the catching of the fish. If you aren't supposed to hit the fish except on the mouth when catching it, something to make that more clear would have been great. Same with when the fish leave the hook. Its hard to know why that happens. I think if you fixed those the game would have been more enjoyable. But good job nonetheless.