Its so nice to play this game! You did a great job, guys! It fills so chill and interesting to adventure over the level. Audio fits here 10/10! Art and UI is awesome too.
I think gameplay could be more casual for me with more O2 capacity and O2 regen places - it shouldnt give much, but now i have troubles with searching for it.
I think this game will feel more viby if u give space for the player to search and enjoy of sea depth view with some kind friendly fishes and plants.
Its interesting idea to place maze to the depth, but maybe it should be more nature.
Also i think it will be nice if character body will have ability to bend, so it would have more movement.
Now the game has a lot of interesting ideas, and i would like play it again when u polish some moments.
You did nice game, good luck with this project <3