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Thalassa: Edge of the Abyss
Steam Reviews
Very Positive86% of 268 reviews are positivePlaytime
Updated community averages based on player submissions.
Main Story
6h 52m
Main + Extra
7h 55m
Completionist
8h 6m
Links
About This Game
Uncover the mystery of Thalassa, a first-person psychological drama set under the sea. Ill-fate has fallen on your former crew and friends and it’s up to you to find answers onboard the wreckage. Experience the melancholic underwater journey of human stories facing life and loss.
Media
3 videos + 8 screenshotsLast updated Mar 7, 2026