The opening story was amazing! I had a great time with the mechanics that were working and you already know about what isn't so I won't bother going over that again but I think you did something awesome with this little game! I loved how you made the screen darken when low on Oxygen. I think it would have been a nice touch if the oxygen came back more quickly when out of the sand and if the player had the ability to dive into the sand faster if they chose. Still, I can see the vision and I enjoyed me time with your game. Good job!