Single-player games like Atoms and Time
Below are 8 single-player Steam games similar to Atoms and Time, 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 Atoms and Time page.
Ranked picks
- 1
The Sapling
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
The Sapling is a short simulation game where you design your own plants and animals, and put them in a world together. Or you turn on random mutations, and see what evolution does to your ecosystem!
- 2
Ecosystem Architect
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
In Ecosystem Architect, build the ecosystem of your dreams and let your imagination run wild. With a vast selection of foliage, animals, and prehistoric creatures, mix-and-match to your heart's content and watch your environment come to life as they interact in an in-depth simulation.
- 3
IDLE Animal Anatomy
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
A colorful clicker simulator where you can yourself grow a living creature cell by cell! Watch how organs, bones and skin are growing! Feel like a real scientist by becoming a pet creator!
- 4
Creatura
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
Seed, Breed, Create. From single cell organisms to complex ecosystems. Evolve every part of your own unique aquarium / terrarium by applying scientifically accurate principles of natural and artificial selection, in Creatura - ultimate Virtual Evolution Vivarium Simulator.
- 5
Ecosystem
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
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
Nature & Life - Drunk On Nectar
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
Play as Animals, Live in Nature! Multiple game modes include Realistic Lifecycles, Survival, Sandbox, Fantasy and Exploration. Unique gameplay for each species! Currently featuring Monarch Butterfly, Praying Mantis, Jumping Spider and other iconic creatures. Mammals, Birds, Reptiles coming soon!
- 7
Gridworld
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
Gridworld is an artificial life and evolution simulator. Watch creatures evolve through natural selection as they learn to find food, avoid danger, and compete with other creatures for survival.
- 8
Planetary Life
Single-player alternative to Atoms and Time — playable solo, no multiplayer required. Shares Simulation with Atoms and Time.
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!