The included manual assists nicely though the flat gray color is hard to read in low light. The sounds of Sub Culture are pleasant and while varied, do add to the whole feel of the game. Ethereal underwater new age music is the predominant soundtrack since most of your time is spent navigating your submarine around the underwater world. This is interspersed with visits to different cities and facilities. The music changes from location to location without any regard to the overall feel of the game.
Incidental game sounds seem appropriate to the action.
Explosions, engine sounds, and other parts of the game do add to general atmosphere and enhance the realism. When piloting the submarine, the game is at it's strongest and the sound supports this portion. However, no effort was put in voices for any of the characters. Your English computer speaks to you in male and female voices though it seems confusing why they speak on some occasions and not on others. Most of the game has merely retreated to text and left a huge gap in my opinion.