
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.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.14/day in the week to Jul 30 → 0.29/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
Thalassa is a single player, first person psychological drama set in 1905. You play as Cam, a deep sea diver in a crew of adventurers and pioneers aboard Thalassa. As you prepare to raise a long-forgotten Spanish galleon from the ocean, what should be a great day for history takes a turn for the worst.
Upon needing to take some time to heal from the event, you discover Thalassa has met a mysterious and unfortunate end. Your former crew mates are gone, and you'll need to descend into the depths to board the ship once more. Alone in the ocean, with your diving support Bailey guiding you from the surface, it's up to you to piece together the clues left behind in the wreckage and discover what really happened in the final moments onboard the ship.
Immerse yourself in an atmospheric story of self-discovery and sorrow onboard Thalassa.

Discover a story that delves into the complexities of human emotions and interactions, and learn about the intricate relationships between your crew members. You'll uncover the personal struggles of each member of Thalassa's crew and how grief can be experienced in different ways. Loss takes its toll in many shapes and forms, while life marches on.

As the only diver left in the crew, it's up to you to return to Thalassa, now in its final resting place on the seabed. Navigate your way through the strange, but beautiful surroundings and discover the clues that will help you unravel the events leading up to the disaster.

Experience the calm and isolation of deep-sea exploration as you navigate through debris of the shipwreck. In order to continue exploring the ship, you'll have to find the right tools to help unblock the obstructions in your path.
Engagement
Reviews
Themes across 59 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Not your typical type of game, but relaxing and enjoyable for 8-10 hours. Good: Graphics, plot, character development, subplots and gameplay is overall enjoyable. User controls are easy and intuitive. Game could run on a potato PC. Bad: You often wish you could cancel a cut scene; you wish you could move faster than you can; you really really want to float or jump constantly.
This is a good game. Fun story and UI feels polished. Walking animation is slow and diving is not the most realistic but I am here for the story and vibes. This game is about 5-7 hours of playtime.
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, French, Italian, German, Spanish - Spain, Japanese, Korean, Norwegian, Russian, Simplified Chinese, Traditional Chinese*languages with full audio support
Hours played at review time, across 61 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
I very much enjoyed this, even as someone who won't swim in the ocean even if i can see the bottom. The game is slower paced, but not in a bad way. The story has to be uncovered bit by bit - obvi bc investigation stuff - but it kept me engaged the entire time. The art style, animations, voice acting, music composition? all of it is amazing and well done. One of the biggest complaints I saw in the other comments/reviews is that... You can't run. I personally am okay with this because, logically, it makes sense. It makes sense that you cant run because: A. you're in a *heavy* dive suit and moving in water. B. Water is 800 times *more* dense than air which is why it's harder to move quickly through it in general - especially if you are vertical and thus have more drag C. Cam, the protag that we play as, is doing their best to NOT take any risks and the best way to do that is to move cautiously Overall, I'm giving this a 9/10 but only bc i personally dont like the ocean lol
This is a great game. Would recommend it t others.
It was a neat little mystery story-teller. The story was captivating, the mystery-solving aspect was fun. I like the environment and setting, the ship was beautiful, the characters all had depth to them. A few oddities were that the dialogue between any two characters felt a little awkward. There were long pauses and a weird pace to conversation and flow. During recreations of "what happened" it would have been nice if there were more ambient sounds and foley when characters moved around. My only true dislike was at times it felt like the clues to solving some mysteries really didn't make sense or easy to conclude. Overall though, good game, worth 10 hours. In the end I chose to [spoiler] leave Alex behind. [/spoiler]
Thalassa: The Edge of the Abyss took me to the depths of the ocean, searching through the ruins of a sunken ship to learn how the fate of it, and it’s inhabitants, came to be. From the beginning, the game does a great job at drawing you into it’s atmosphere, especially once you get underwater. The game is supposed to be set in 1905, and while it does a decent job capturing the era in some respects, there are plenty of areas where it falls short, with numerous historical inaccuracies and bad world design elements. The animations, like others have mentioned, are very slow. While I understand that this was likely designed to add to the underwater immersion, it does get annoying after awhile. I doubt speeding up the animations a little bit would piss anyone off. The story is good. It’s got a deeper meaning that isn’t very clear until the end. I did find the reason for the ship sinking to be anti-climactic, but it did add to the overarching narrative and meaning of the game. There were some interesting twists throughout the game, subplots that I wasn’t expecting to end the way they did. The characters were well written with fairly good voice acting. I’m also a fan of the clue solving system, I think it was well implemented and really adds to the detective-style gameplay experience. I’d classify this game as a narrative-driven walking sim, so if that’s not your thing, you may want to pass on this one. Overall, I enjoyed my time on the Thalassa. It’s a fairly short game, taking around 7 to 10 hours to complete. I did 100% of the mysteries and clocked just over 8 hours. I think the $20 price tag is fine for an indie title such as this, but I’d probably just wait for a sale at this point. Side note: One of the achievements (Nautical Nomad) is a little buggy. It resulted in me having to revert to an older save, and walk around areas I’m pretty sure I had already visited to get it to eventually pop.
This is a delightful game. I was very invested in the story. It is basically a walking sim, though, so if that's not your jam don't play it.
This game made me cry, in a healing way.
I loved this game. Its a shame it has not sold as much as it deserves. Great story, production values and voice acting.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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