The game features about 1 hour and a half of video, plus 13 sound tracks.
The game won the Fiction prize of the World Festival of Underwater Pictures in Antibes, France, in 1996.
As I don't have a numeric version of the movie, the following is an attempt to reconstitute it by taking snap shots from the game:
Arrival on departure site:
Arrival at HP1: the first underwater station
…is causing an the accident:
Need to explore with STORM through the passage:
The probe detects unknown life:
Ennemies are coming:
Atlantis history explained: