Games like I Thalassa
If I Thalassa is your kind of game, the closest matches are Sonorous | Deep Down Below, Under A New Sun and Submarine VR — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.
Get personalized picks →About I Thalassa: Immerse yourself in an alien ocean in this open-world survival game. Explore the biomechanical depths, tame alien creatures, pilot submarines, and uncover the mysteries of the alien entity known as Thalassa.
Players who liked I Thalassa also play
Steam players who put hours into I Thalassa also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.
Sonorous | Deep Down Below
WHY THIS
Top pick for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
SONOROUS – Deep Down Below is an unforgiving underwater first-person survival game set in a dystopian world. Find your sunken research to save humanity from an eternal life on the open sea in a continuous fight for survival.
Under A New Sun
WHY THIS
Second-strongest match for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
While searching for a new home, an unexpected failure in your ship has left you stranded on a planet surprisingly similar to Earth. Discover a vast open world, hunt for food, develop technologies, and build yourself a new home to survive!
Submarine VR
WHY THIS
Third-strongest match for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
Submarine VR takes you on a adventure-filled underwater simulation experience! Dive deep and cruise through the endless uncharted nature of the ocean and you will see clownfish, dolphins, penguins and mysterious sea animals. Get close to the sea surface and sail in the open sea with your cruise ship
subROV : Underwater Discoveries
WHY THIS
Ranked #4 for I Thalassa fans by collaborative filtering across millions of Steam libraries.
Pilot a remotely operated submarine and explore the oceans! Defy the darkness and crushing pressure of the deeps as you chart unknown regions and study new species of ocean life.
Under a Rock
WHY THIS
Ranked #5 for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
A procedural open-world survival craft game for 1-10 players. Explore a primitive but dangerous place with a different evolutionary path; here, wildlife is oversized, Neanderthals still exist, and curses are real.
Darkwater
WHY THIS
Ranked #6 for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
Darkwater is a cooperative extraction horror game for 1-4 players. Command a submarine trapped under the ice of an alien planet. Battle enemy vessels and deep sea abominations as you hunt for resources. Do what it takes to survive.
S.U.B.
WHY THIS
Ranked #7 for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
Navigate through the dark, deep seas with your best friend to infiltrate the Evil Doctor's Secret Underwater Base © in this two-person local couch co-op game! Will you be able to outrun the dreadful laser-robot-sharks long enough to foil the Evil Doctor's plans?
cyubeVR
WHY THIS
Ranked #8 for I Thalassa fans by collaborative filtering across millions of Steam libraries. Shares Adventure with I Thalassa.
Immerse yourself in a voxel game exclusively designed for VR. A beautiful infinite procedural world. Explore, gather resources, craft with your hands in 3D, and build anything you can imagine. Featuring great VR controls, near-infinite view distance, Steam Workshop mod support, and much more!
Free alternatives
Free-to-play games that recommended players of this title also tend to enjoy.
Life is Strange - Episode 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with I Thalassa.
Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.
ENA: Dream BBQ
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with I Thalassa.
Experience surreal environments and inexplicable characters as ENA in a new wild world.
Indigo Park: Chapter 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with I Thalassa.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
The Looker
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.
UNBEATABLE [white label]
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with I Thalassa.
A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.
Dagon: by H. P. Lovecraft
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with I Thalassa.
Face unspeakable horrors. Succumb to madness. Welcome to a free daemonic narrative experience inspired by H. P. Lovecraft.
Paper Lily - Chapter 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with I Thalassa.
Paper Lily is an RPG horror game in which you can solve puzzles in different ways. Explore a hidden world, meet strange characters, and guide Lacie as she attempts to find answers about her unusual condition.
The Lab
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
![UNBEATABLE [white label] — Steam game cover](https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1290490/header.jpg?t=1736770503)
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Head-to-head comparisons
Frequently asked about I Thalassa
- Does I Thalassa have multiplayer or co-op?
- Yes — I Thalassa supports multi-player play according to its Steam store listing (Multi-player).
- What games are most similar to I Thalassa?
- Based on Steam play patterns and shared genres/tags, the games most often recommended alongside I Thalassa are Sonorous | Deep Down Below, Under A New Sun, Submarine VR.
- Who developed I Thalassa?
- I Thalassa was developed by San Liuk.
imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on I Thalassa.
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