Games like Fathomless
If Fathomless is your kind of game, the closest matches are Settletopia, Corsair Cove and Ascent of Ashes — 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 Fathomless: Survive the deep. Build and manage a nomadic underwater colony in a retro-futuristic ocean world. Resources are finite, forcing your colony ever deeper into the deadly abyss.
Players who liked Fathomless also play
Steam players who put hours into Fathomless 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.
Settletopia
WHY THIS
Top pick for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Simulation with Fathomless.
Grow a small colony into a vast, world-spanning civilization. Play solo or with friends as you gather resources, build cities, manage colonist needs, explore uncharted lands, establish logistics, raise armies, forge alliances, and wage wars—all in a living world.
Corsair Cove
WHY THIS
Second-strongest match for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Simulation with Fathomless.
Build a sprawling pirate haven, raise a fleet to explore the high seas, and take on the Crown to keep the Age of Piracy alive! From ale to flintlock pistols, and from scallywags to swashbucklers, you’ll need to manage complex production chains and govern a rowdy crew to reign supreme over the seas!
Ascent of Ashes
WHY THIS
Third-strongest match for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Fathomless.
A colony sim set in a post-apocalyptic dystopia. Build and defend your base. Manage your survivors. Engage raiders, aliens, Remnant soldiers and other factions in real-time-with-pause combat. Or use stealth to outwit them. Explore the massive world. Survive at all costs
Timberborn
WHY THIS
Ranked #4 for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Fathomless.
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
Zombie Cure Lab
WHY THIS
Ranked #5 for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Simulation with Fathomless.
In a world overrun by the undead, build a lab to fight back with science. Manage survivors, gather vital resources, and turn zombies into allies. Defend your base and research the cure to reclaim humanity.
After Long Night
WHY THIS
Ranked #6 for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with Fathomless.
After Long Night is a sandbox survival RTS. Build and fortify your base, scavenge every corner for vital resources, craft deadly weapons, and raise a militia to fight off relentless zombie hordes that strike every night. In this world, scavenging isn't just survival—it's strategy, power and war.
Whiskerwood
WHY THIS
Ranked #7 for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Simulation with Fathomless.
Establish a home for your industrious mice under the oppressive paw of your cat overlords in this city builder featuring complex simulations, intricate production chains, and the age-old rivalry between cat and mouse.
Nova Roma
WHY THIS
Ranked #8 for Fathomless fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Simulation with Fathomless.
The glory of Rome is at your fingertips in this city-building game where you must appease the gods, enact laws, and develop complex supply chains to meet the needs of your citizens.
Free alternatives
Free-to-play games that recommended players of this title also tend to enjoy.
Ultimate Custom Night
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Fathomless.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
ENA: Dream BBQ
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Fathomless.
Experience surreal environments and inexplicable characters as ENA in a new wild world.
The Looker
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Fathomless.
You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.
Paper Lily - Chapter 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Fathomless.
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!
Project Kat - Paper Lily Prologue
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Fathomless.
Project Kat is a short, unconventional RPG horror game in which there is always another way. Solve puzzles, make friends (or not), and guide Kat as she attempts to uncover the mystery behind a strange golden letter.
93, Kuindzhi
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Fathomless.
Kuindzhi, 93 is an atmospheric first-person narrative vignette about an 18-year-old boy from Donbas. The story takes us to March 2022, when the world changed forever — into a space where the past, fears, and doubts find their voice.
DORONKO WANKO
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Simulation with Fathomless.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
Narrow it down
Head-to-head comparisons
Frequently asked about Fathomless
- What games are most similar to Fathomless?
- Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Fathomless are Settletopia, Corsair Cove, Ascent of Ashes.
- Who developed Fathomless?
- Fathomless was developed by Glowlight.
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 Fathomless.
For library-aware picks tuned to your specific taste, sign in with Steam on the home page.