Single-player games like Subnautica: Below Zero
Below are 15 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
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.
- 3
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.
- 4
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?
- 5
Bermuda - Lost Survival
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Survivors, Adventurers, Explorers! Prepare for the journey of your life and experience one of the world’s most mysterious regions! The Bermuda Triangle is notorious for the vanishing of countless ships and airplanes. Will you survive long enough to reveal its secret?
- 6
Project Castaway
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Adventure with Subnautica: Below Zero.
Project Castaway is a survival crafting title set in the Pacific Ocean. Live the life of a stranded castaway, with only yourself - and the island's inhabitants - for company! Sail the ocean, hunt, explore unique islands and gather resources as you fight for survival.
- 7
The Forest
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
As the lone survivor of a passenger jet crash, you find yourself in a mysterious forest battling to stay alive against a society of cannibalistic mutants. Build, explore, survive in this terrifying first person survival horror simulator.
- 8
Crashlands
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Subnautica: Below Zero.
Fight and tame alien beasts, craft resources into menacing weaponry, befriend the outlandish locals, and go toe-to-chin with a world-domineering maniac.
- 9
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.
- 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
Minecraft: Story Mode - A Telltale Games Series
Single-player alternative to Subnautica: Below Zero — playable solo, no multiplayer required. Shares Adventure with Subnautica: Below Zero.
Episode 1 is now FREE - for a limited time! In Minecraft: Story Mode, playing as either a male or female hero named 'Jesse,' you’ll embark on a perilous adventure across the Overworld, through the Nether, to the End, and beyond.
- 14
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.
- 15
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.