Nightmares from the Deep: The Siren's Call 1.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software belongs to Games. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This Mac application was originally developed by Big Fish Games.
From the developer:
Nightmares from the Deep: The Siren's Call is the sequel of the smash hit Nightmares from the Deep: The Cursed Heart. It is an epic adventure story with an exciting plot, outstanding puzzles, and unforeseeable depths of twists and turns. When Sarah Black, the curator of the Caribbean Naval Museum, receives a package from a mysterious messenger, she is unwittingly drawn into an ancient conflict.
You may want to check out more Mac applications, such as Nightmares from the Deep 3 - Davy Jones - Collector's Edition, Nightmares From The Deep the Cursed Heart or Nightmares from the Deep: The Cursed Heart, Collector’s Edition, which might be related to Nightmares from the Deep: The Siren's Call.