Single-player games like On Island
Below are 8 single-player Steam games similar to On Island, 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 On Island page.
Ranked picks
- 1
Planeturem
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Indie and Adventure with On Island.
Explore a procedurally generated planet filled with resources to harvest - or discover structures containing potentially rare items. Build your base to protect yourself and fight off evil, collecting materials to build new gear. Build a rocket and explore new planets!
- 2
ReckFall
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Action and Indie with On Island.
Stranded on an alien earth-like planet after a failed mission, you’ll need to gather resources, build shelter, and fight to stay alive. Explore strange biomes, uncover hidden secrets, and decide whether to rebuild or escape before the planet claims you.
- 3
Mortal Frame: Reforged in Survival
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Action and Indie with On Island.
"Mortal Frame" is a sci-fi RPG combining open-world exploration and sandbox survival. The player explores a challenging world, gathers resources, crafts gear, captures AI companions, and upgrades modification chips to enhance their abilities, facing powerful foes and uncovering hidden mysteries.
- 4
Smalland 2: Lost Realms
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Action and Adventure with On Island.
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.
- 5
Ugmania
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Action and Adventure with On Island.
A sandbox survival game set in a universe full of procedurally generated worlds to explore and conquer!
- 6
PlanetSmith
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Indie and Adventure with On Island.
A sandbox survival RPG set on fully spherical hex worlds. Crash-land on an uncharted planet, craft and build to survive, uncover what infected the solar system, then build a ship and fly seamlessly to other planets. No loading screens. No edges.
- 7
Lay of the Land
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Action and Indie with On Island.
Lay of the Land is a sandbox adventure game set in a fantasy world where everything is physically simulated. Use the environment to your advantage and Explore, Fight, Loot and Build your way through mysterious lands.
- 8
Whisper of the Swallows
Single-player alternative to On Island — playable solo, no multiplayer required. Shares Action and Indie with On Island.
Brave a savage, unforgiving procedurally generated world where extreme weather and the nightmares of the dark will hunt you down. Alone or in co-op, survive, build, and explore to turn a cursed hellscape into your sanctuary of light.