Single-player games like Biosphere-3
Below are 9 single-player Steam games similar to Biosphere-3, 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 Biosphere-3 page.
Ranked picks
- 1
Adhain
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Indie with Biosphere-3.
Become a god and expand your influence through kindness or fear. Grow your settlements, make villages believe in you, and teach your creature how to follow your example. Play alone or join other gods, as allies or rivals.
- 2
Anthill Wars: Ant Colony Sim
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Indie with Biosphere-3.
Grow an ant colony from a single queen into a thriving empire. Raid rival anthills, steal their brood, and strengthen your colony with captured ants. Defend your territory from giant insects and expand your nest. When the time comes, release a swarm of winged queens and begin again in distant lands.
- 3
The Universim
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Indie with Biosphere-3.
Jump straight into managing your own planets as you guide a civilization through the ages. Build the ultimate empire in The Universim, a new breed of God Game in development by Crytivo.
- 4
Reus 2
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Indie with Biosphere-3.
Shape worlds with your godly titans. Make symbiotic ecosystems and inspire humanity with your creations. Their achievements unlock new possibilities. Make different planets for different human spirits, and fill the universe with life!
- 5
Ecosystem
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Indie with Biosphere-3.
Create virtual lifeforms whose development is shaped by a deep simulation of evolution. Guide them as they fight, mate, and adapt to the environment you have built. All the creatures in the trailer evolved on their own in the game!
- 6
Fata Deum - The God Sim
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Simulation with Biosphere-3.
Inspired by the god games of old, Fata Deum lets you mold settlements and townsfolk in your image. Will you raise the settlements to splendor, or spur them on to violent debauchery and demons? Watch as a living world grows under your whims.
- 7
WorldBox - God Simulator
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Indie and Simulation with Biosphere-3.
WorldBox is the ULTIMATE god simulator and sandbox game. A petri dish for your fantasy civilizations. Create your own world or destroy it using many powers. Watch civilizations grow, form kingdoms, colonize new lands, sail to far continents, wars to ignite, empires to fall and towns to burn!
- 8
Planetary Life
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Strategy and Indie with Biosphere-3.
Manipulate climate, add plants and evolve creatures in this planet and life sandbox simulation game. From cells to civilizations, spread life throughout the whole planet. Or just enjoy watching your creation burn!
- 9
Birdwatching Notebook
Single-player alternative to Biosphere-3 — playable solo, no multiplayer required. Shares Casual with Biosphere-3.
Turn your balcony into your very own birdwatching spot, and await the arrival of new avian friends! Enjoy a cozy idle game — place a tiny postcard on the corner of your screen, keeping you company with pleasant scenes and visiting birds. Oh, and don't forget your camera!