Definitely Octalien! It already had cool and polished mechanics, so I could focus on adding new fish, new huge map, and QOL stuff. After my day 3 submission the game branched out so much, you can see it here
Yeah! I can't believe how many versions were made. I thought Bouy had the most for a little bit and then I searched Octalien to check and there's like at least 6 lol. I haven't played all of them yet but I'm curious what they have in store.