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Thalassa: Edge of the Abyss
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.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via SteamSpy as of 2026-05-15.
“This game has an amazing story. It is dark and weighty but I did not feel it was for shock value and by the end it feels really...normal but in a meaningful way. I think a lot of it is the mental state of Cam and his grief. Other reviews have talked about the monotony and the…”
— a player, Steam review · 7 hrs played“It was fun, although slow movement. Fun little mystery game under water”
— a player, Steam review · 7 hrs played“This game is mercilessly on rails and is not really a puzzle game, the only agency you have is in walking on those rails back and forth. The repetitive and painfully slow UNSKIPPABLE animations easily doubled the playtime to help it pretend there was more substance here than…”
— a player, Steam review · 12 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-08-02 21:25 UTC · history via SteamCharts.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Thalassa: Edge of the Abyss Deluxe Edition 50% OFF in Steam Detective Fest🕵️🌊
Hey all! 👋 We're thrilled to be a part of Steam Detective Fest and to celebrate, Thalassa: Edge of the Abyss Deluxe Edition is currently 50% OFF until January 19th! Can you piece together the clues le
MiniDoc 1 & 2 | Intro to the Art of Thalassa
Creating the universe of Thalassa and approaching harder-to-digest topics with delicacy has been the biggest mission of Sarepta Studio for the past 6 years. Game Designer Catharina Boehler gives glimp
Deluxe Edition now available featuring Art Book, Comic and 3D Printer Files!
Take a deeper look into how Thalassa the ship was created, how each character represents little pieces of real world, and the stylistic details of the underwater experience that tethers realism and fa
Nominate Thalassa: Edge of the Abyss in the Steam Awards 2024!
Hey all! It's that time of the year- the Steam Awards 2024 are here! Steam is currently inviting players to nominate their favourite game within a specific award category. We're proud of Thalassa's st
Patch 1 - Out Now I Thalassa: Edge of the Abyss
Hey all! 👋 Today, we have rolled out Patch 1 for Thalassa: Edge of the Abyss . Our first patch contains adjustments to Thalassa's audio mix, fixes to a handful of community-reported bugs and more! Sin
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-15.
| Genres | Adventure, Indie, RPG |
| Player tags | Adventure · Interactive Fiction · First-Person · Atmospheric · Emotional · Psychological · Singleplayer · Story Rich · Indie · Exploration · RPG · Underwater (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Full controller support · Steam Cloud · Family Sharing |
| Languages | English * , French, Italian, German, Spanish - Spain, Japanese, Korean, Norwegian, Russian, Simplified Chinese, Traditional Chinese * |
| Controller | Full support |
| Achievements | 25 |
| Estimated owners | 0 – 20,000 (SteamSpy) |
| Official site | https://thalassagame.com |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS: Windows 10 Processor: Intel Core i5 4th Gen/ AMD Ryzen 3 4100 4 cores 3.8 GHz Memory: 8 GB RAM Graphics: NVIDIA GeForce GTX 1050 Ti 4GB/ AMD R9 290 HD 4GB Storage: 30 GB available space