I think you all did a great job! I played the browser version, so my comments will be based on that.
I wasn't sure how the game connected to the game jam theme at the start, but seeing things change visually and musically, along with the radio dialogue explaining it all was a really neat idea, and I think you incorporated the 'Doomsday' theme well overall. As for the visuals, I think they're really well done. The sprites are simple, but effective, and everything is well defined. Not only that, the music and sound effects do a lot to enhance the player experience and the game's narrative. On a related note, I appreciate the inclusion of a fish compendium, not only giving fish facts but also providing further context to the character's thoughts.
Going onto some small critiques, the game feels kind of slow. I don't know if I could've sped it up, but there's a bit too much downtime between fish catches and the radio text being displayed. On another note, the game is short enough that the gameplay stays fun throughout, but it didn't feel like things got much harder near the end. Finally, while the game is pretty technically solid, the cooler icon seems a bit buggy. On my first attempt I closed the cooler window, but I couldn't seem to open it again. On my second attempt, I couldn't close the cooler, and the game progressed like normal despite the cooler UI still being present. I don't know if the download version has these issues, but the browser version did for me.
With all that said though, you all did an awesome job! Good work!