Single-player games like Isotopia
Below are 8 single-player Steam games similar to Isotopia, 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 Isotopia page.
Ranked picks
- 1
Tesera
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
Tesera is a sci-fi sandbox game in a mysterious alien world. Explore an endless voxel world, defend yourself against aggressive creatures and drones, building your dream settlement alone or with friends.
- 2
Sin-Cay
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
A sci-fi adventure with shooter and puzzle elements. The game follows the adventures of Shin-kai, a half-divine creature animated by ancient magic in an uncharted and mysterious world. The story begins in 1959 in the Soviet Union, in a place called "the mountain of the dead".
- 3
SPRYDITE
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
Sprydite is an action-adventure, survival with immersive RPG elements in a large open world. Science fiction set in a post-apocalyptic and cyberpunk backwoods setting with a small touch of surrealism.
- 4
Survival Advanced
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
Congratulations, you have been invited to live on our reef, a paradise world (almost) where you can build your dream home... but beware of the enemies lurking on the islands. A little tour of the property?
- 5
Escape Condition
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
ESCAPE CONDITION is the first FPS that lets you choose how to prepare your city for the catastrophic arrival of AI Superintelligence (EVA). Will you fight EVA alone with AI-powered Cybernetics, or empower the citizens around you to help in the fight?
- 6
Enigmatic Worlds
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
Explore strange and abstract worlds filled with equally unusual but deadly beings of many types. Enigmatic Worlds is an FPS inspired by obscure retro-styled FPS games and Amiga games.
- 7
Lost Hope
Single-player alternative to Isotopia — playable solo, no multiplayer required. Shares Action and Indie with Isotopia.
Lost Hope is a survival game where you shape the world, battle zombies, and explore diverse territories, uncovering secrets while facing extreme challenges.
- 8
Fallout 4
Single-player alternative to Isotopia — playable solo, no multiplayer required.
From Bethesda Game Studios, the award-winning creators of Starfield and The Elder Scrolls V: Skyrim, comes Fallout 4. A landmark in open-world RPG design and winner of over 200 ‘Best Of’ honors, including the DICE and BAFTA Game of the Year.