Single-player games like Site Unknown
Below are 8 single-player Steam games similar to Site Unknown, 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 Site Unknown page.
Ranked picks
- 1
The Forest of Black Eden
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Indie and Adventure with Site Unknown.
Stranded on an island crawling with terrifying creatures, you must survive, build, and uncover its dark secrets. Escape or be one of them with lost dream.
- 2
Solitude
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Site Unknown.
Beached upon the coast of a haunted land you must survive the trials of an ancient malevolent force which seeks freedom from its shackles. Battle against the horrors of the night, build shelters to weather the elements, scavenge for supplies and uncover the mystery at the heart of the island.
- 3
Corroded
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Indie with Site Unknown.
In this creature filled, horrifying, procedurally generated world, survive by looting ruins, expanding your base, getting better gear, and staying fed. Don't get caught in the flood and survive this nightmare.
- 4
25 Days in the DARK
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Indie with Site Unknown.
The game puts you in the role of a lost child who must survive 25 days in a dangerous, pixelated world full of hostile creatures. Every day is a fight for survival—you must find food by hunting, fishing, or gathering berries. However, even the simplest tasks can be risky.
- 5
Smalland 2: Lost Realms
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Site Unknown.
The Smallfolk are back with a massively expanded universe in this open-world survival adventure set on a tiny scale! Enjoy up to 10 player co-op where you craft weapons and armor, form companionships with creatures, build encampments, and discover strange new lands.
- 6
Medieval Builders: Strongholds & Castles
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Adventure with Site Unknown.
Craft, hunt, and survive in fantasy medieval world. Build your village, manage and defend castles and whole kingdoms. Become a local lord and a builder. Strongholds & Castles are waiting for you to manage them - alone or with your friends!
- 7
Space
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Indie with Site Unknown.
Stranded on a hostile alien world, you must gather resources, craft tools, and automate production to survive. Build a base, fend off deadly wildlife, and uncover ancient secrets in this immersive sci-fi survival adventure. Will you conquer the planet or succumb to its perils?
- 8
Outbreak Island
Single-player alternative to Site Unknown — playable solo, no multiplayer required. Shares Action and Indie with Site Unknown.
Survive on a remote Island, where a mysterious Outbreak awakens bloodthirsty monsters at night. Craft, build and defend your base in the brutal world of Outbreak Island, an open-world sandbox survival horror game.