Amazing game. The lack of movement options, scarcity of munitions, durability of the subs, and lack of visuals are what make this game a unique survival experience.
This combined with the limited sound options enhanced my thalassophobia, and made it a really fun experience!
Graphically, the game really succeeds in employing black and white by making a clear distinction of points of interest, items, and enemies.
Truly a masterful submission. I look forward to playing this game in the future.