Single-player games like Sinking Eternity
Below are 8 single-player Steam games similar to Sinking Eternity, 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 Sinking Eternity page.
Ranked picks
- 1
Ecliptica
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and Adventure with Sinking Eternity.
Ecliptica is a first-person open-world colony survival simulator with a fully dynamic economy. Set on a hostile alien planet, you'll found corporations, fight for resources, and build a sustainable future—or be wiped out by ruthless nature, politics, and competition.
- 2
Unshallow
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and RPG with Sinking Eternity.
Explore the vast underwater world as one of the four divers on a mission. Build your base, grow plants, and craft items to survive. Upgrade your gear, scavenge for resources, and uncover the secrets of the alien planet in this survival game.
- 3
Airlock
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and Adventure with Sinking Eternity.
Explore a ruined city, rescue survivors, and build a thriving underground sanctuary. Every survivor unlocks new professions, technologies, and opportunities as you rebuild humanity beneath the surface while surviving the horrors above.
- 4
Sea Warden
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and Adventure with Sinking Eternity.
Sea Warden is a co-op survival adventure set on the back of Ao, a giant sea turtle journeying across a shattered world. Build, craft, explore, and defend your living base as you travel between forgotten islands in search of lost knowledge and stranded souls.
- 5
The Alters
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Adventure with Sinking Eternity.
Explore an emotional sci-fi game with a unique blend of survival, adventure, and base-building elements. Help Jan Dolski, the sole survivor of an ill-fated space expedition, create alternative versions of himself to escape a hostile planet and tackle personal turmoils with this unconventional crew.
- 6
Under A New Sun
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and Adventure with Sinking Eternity.
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!
- 7
Subnautica
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and Adventure with Sinking Eternity.
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.
- 8
Voyagers of Nera
Single-player alternative to Sinking Eternity — playable solo, no multiplayer required. Shares Indie and Adventure with Sinking Eternity.
Voyagers of Nera is a cooperative survival-crafting game where you must survive a magical ocean world brimming with lost spirits and deadly monsters. Sail to distant islands, build beautiful villages and surf across the waves with up to 10 players.