Single-player games like Subnautica: Below Zero
Below are 18 single-player Steam games similar to Subnautica: Below Zero, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Subnautica: Below Zero page.
Ranked picks
- 1
Subnautica
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
- 2
Subnautica 2
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Adventure with Subnautica: Below Zero.
Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths.
- 3
No Man's Sky
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Adventure with Subnautica: Below Zero.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 4
Raft
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Raft™ throws you and your friends into an epic oceanic adventure! Alone or together, players battle to survive a perilous voyage across a vast sea! Gather debris, scavenge reefs and build your own floating home, but be wary of the man-eating sharks!
- 5
Valheim
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
A collaborative exploration and survival game for 1-10 players, set in a procedurally generated afterlife inspired by Viking culture. Battle, build, and conquer your way to a saga worthy of Odin’s patronage!
- 6
Grounded
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Adventure with Subnautica: Below Zero.
The world is a vast, beautiful and dangerous place – especially when you have been shrunk to the size of an ant. Can you thrive alongside the hordes of giant insects, fighting to survive the perils of the backyard?
- 7
Satisfactory
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 8
Barotrauma
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie with Subnautica: Below Zero.
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
- 9
Breathedge
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Survive in outer space! Together with your immortal chicken, discover the truth behind your sudden spaceship crash. Craft tools, pilot vehicles, and even control space stations to survive and explore the wreckage.
- 10
Stardew Valley
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie with Subnautica: Below Zero.
You've inherited your grandfather's old farm plot in Stardew Valley. Armed with hand-me-down tools and a few coins, you set out to begin your new life. Can you learn to live off the land and turn these overgrown fields into a thriving home?
- 11
Outer Wilds
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Adventure with Subnautica: Below Zero.
Named Game of the Year 2019 by Giant Bomb, Polygon, Eurogamer, and The Guardian, Outer Wilds is a critically-acclaimed and award-winning open world mystery about a solar system trapped in an endless time loop.
- 12
Terraria
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 13
ASTRONEER
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Interact with strange new worlds in a unique and tactile way, molding the environment itself as if it were clay in your hands. Build your base, master resource management, automate your production lines, and more as you unravel the mysteries of the universe, alone or with friends.
- 14
Don't Starve
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Don’t Starve is an uncompromising wilderness survival game full of science and magic. Enter a strange and unexplored world full of strange creatures, dangers, and surprises. Gather resources to craft items and structures that match your survival style.
- 15
Slime Rancher
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Slime Rancher is the tale of Beatrix LeBeau, a plucky, young rancher who sets out for a life a thousand light years away from Earth on the ‘Far, Far Range’ where she tries her hand at making a living wrangling slimes.
- 16
Oxygen Not Included
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie with Subnautica: Below Zero.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 17
Moonbreaker
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required.
Moonbreaker is a turn-based strategy, tactical skirmish game. The game is designed to be a true digital miniatures experience, set in an expansive sci-fi universe crafted by Brandon Sanderson. Direct Captain and Crew in gripping, ever-changing competition and adventure.
- 18
Zen of Sudoku
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie with Subnautica: Below Zero.
From the creators of Natural Selection comes Zen of Sudoku, a relaxing, easy to play version of Sudoku for your PC.Relax with hand-painted Japanese-styled backgrounds, no timer and lush natural soundscapes.Stimulates your brain to keep it healthy and alert.