Really interesting game, graphics are pretty cool, were they made specifically for this jam? It's nice to see a playable and well thought out 3d game, they can be quite hard to pull off in the time given. Controls sometimes feel a bit floaty but I guess that kinda makes sense for subs.
Congrats and good luck!
Edit: I got a reply in the slack saying they aren't custom made for the game but were edited to work currently, cool nonetheless.