Single-player games like Atom
Below are 14 single-player Steam games similar to Atom, 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 Atom page.
Ranked picks
- 1

Black Hole Simulator
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
A simple black hole simulator.
- 2

I Am a Rock
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
A rock's solar system odyssey.
- 3

Flower Challenge
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
A flower hunter simulator. Here you can walk around the forest and enjoy the nature, meet different animals and, of course, gather flowers.
- 4

The Line
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
Reinventing of 3D puzzles. Experimental gameplay you've never seen before.
- 5

ENCYCLE
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Casual with Atom.
A slightly hallucinogenic puzzle platformer.
- 6

Meta Lines
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
When you feel bored, tired and dazzled by the cool game pictures, it's better to play a relaxed, intellectual and simple leisure game Meta Lines, which is suitable for playing while waiting in line for another game. Wish you have a good time !
- 7

87 Aftermath: A Rolling Ball Game
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie with Atom.
The Event of 2187 left no survivors. In an instant, Earth became a barren wasteland - a lifeless rock floating aimlessly through space. Until 4129. That's when Zenith landed. Set years later, 87 Aftermath is the story of a nameless orbling on a quest to escape from Earth and return home.
- 8

Unserious Sandbox
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Casual with Atom.
A single-player casual game. You play as Sandbox characters, parkour and idle.
- 9

Tree Bonsai
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
An artistic bonsai tree simulation game that follows the life cycle of a plum tree. You can cut branches, add nutrients, and graft while the seasons pass and your tree grows. You can finally fulfill your dreams of a digital bonsai.
- 10

Plankton
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
Minimalist style game : plankton simulation, an electronic pet generated by math codes. Under your care it will slowly grow up and evolve.
- 11

Flower Design
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
A flower arrangement sandbox game. The shapes and colors are freely adjustable and there is a garden where you can build a house and put flowers in.
- 12

Jellyfish
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
A simulation game about the life story of a jellyfish. In this game, I will present the full life cycle of a jellyfish: from an egg to a hydra and finally, after a not very long journey it becomes an adult jellyfish. A work of interactive art to bring the most beautiful of sea creatures to your screen.
- 13

Flower Design Ⅱ
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
An artistic floral arrangement simulation game, a vase of flowers can track your mood at the moment.
- 14

Yin Yang Space
Single-player alternative to Atom — playable solo, no multiplayer required. Shares Indie and Simulation with Atom.
A sandbox FPS game, you can build gardens in the most intuitive and simple way and play with robots.