10/10 Cuteness-points for the story. Loved it ^^. Also I think this already works very well once you get the hang of it. I could easily see this expanded upon. As feedback I would encourage you to find a way to make the artwork more fitting in the future. You seem to like drawing judging on the story arc. So maybe draw something analog - scan it - set white Alpha 0 - export as a png and implement it. My game is in a way very similar to yours and that`s the way we did it. My girlfriend drew. I suck at it. I think the mechanics are already pretty well coded. (Props for the swimming animation, whch actualy feels like single slaps at a time). And for the audio: You just need the most imortant parts (main-ambient-theme, scanning sound, swimming-sound, clicking sound for menus and PCs) rest ist optional if you are low on time. It will work wonders. Overall well done :)