Single-player games like Blue Horizon
Below are 12 single-player Steam games similar to Blue Horizon, 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 Blue Horizon page.
Ranked picks
- 1
Corsairs Legacy - Pirate Action RPG & Sea Battles
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Adventure with Blue Horizon.
Get ready for ‘Corsairs Legacy’. It’s an open-world adventure in the Caribbean, the historical pirate life simulator. Sail the sea, fight the enemies, and explore islands. Will you rise to become a legendary pirate or meet your end at the hands of your enemies? The choice is yours.
- 2
Boulder Island
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
The game is a first-person survival battle game, which requires players to defeat the enemy in the game through operation and collection.
- 3
GRIMGUNS
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Adventure with Blue Horizon.
A modern hunter follows a rune-marked deer through a portal into a brutal fantasy world. Fight goblins with MP5s, dragons with RPGs, and giants with tank mines in this co-op & solo survival game. Salvage weapons, build bases, and survive where ammo is scarce and magic is deadly.
- 4
VALHALL: Harbinger
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
VALHALL is a blend of multiple genres, combining first & third person directional physical combat slasher with a survival experience set in a brutal world of Vikings. Survive, feel Thor's power, become an einherjar, and enter the ultimate battlefield!
- 5
Ylands
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Adventure with Blue Horizon.
Adventure awaits you and your friends in the world of Ylands! Gather resources, craft tools, construct anything and everything, and explore the lands! Build a ship and set sail, encountering mythical animals, a wide variety of sea-life, enemies of all kinds and much more!
- 6
Kingdom of Atham: Crown of the Champions
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
"Kingdom of Atham: Crown of the Champions - Embark on a medieval fantasy survival odyssey. Reclaim the stolen Crown, battle dark forces, and explore diverse lands. Uncover secrets, wield magic, and craft your destiny. Will you become the true champion of Atham?"
- 7
Blood and Gold: Caribbean!
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
'Blood & Gold: Caribbean!' is a blend of economic strategy and open-world RPG, set in the pirate era of XVII Century Caribbean. The game is based on the significantly improved Mount & Blade: Warband engine.
- 8
Alaloth: Champions of The Four Kingdoms
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
A hardcore high fantasy isometric action RPG set in a huge sandbox world ruled by magic and monsters. Master deep skill-based combat, forge powerful builds, explore unforgiving lands and dungeons, face brutal boss fights, uncover ancient secrets, and save Plamen from its inevitable doom!
- 9
Subnautica
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Indie and Adventure with Blue Horizon.
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.
- 10
Rebel Galaxy
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.
- 11
Stranded Deep
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Indie and Adventure with Blue Horizon.
Take the role of a plane crash survivor stranded somewhere in the Pacific Ocean. Come face to face with some of the most life threatening scenarios that will result in a different experience each time you play. Scavenge. Discover. Survive.
- 12
Salt
Single-player alternative to Blue Horizon — playable solo, no multiplayer required. Shares Action and Indie with Blue Horizon.
Salt is an open world exploration game where you sail from island to island looking for loot and new discoveries! Relax and explore at your own pace, picking a direction and setting sail across a vast ocean filled with quests, merchants, ruins, pirates, and other mysterious places.