The DLC expansion, Still Wakes the Deep: Siren’s Rest, set 11 years later, introduces a new main character named Mhairi on the Beira D oil rig in 1986, exploring the deep sea mysteries and thalassophobia inspirations.
Inspirations include deep water fear, saturation diving like in 'Last Breath' documentary, 'Blue Planet II' visuals, Dante’s 'Inferno' structure, 'The Descent' film's claustrophobic intensity, and 'The Lighthouse' portrayal of isolation and yearning.
The unexplained ocean sound 'Julia', Hebridean poet Màiri Mhòr nan Òran's emotional verses mirroring the protagonist’s experience, all shape the narrative of Siren’s Rest DLC expansion.
The mix of human emotions, eerie environments, and the unknown creates an intense storytelling experience immersed in psychological depth and thematic richness.