Single-player games like Black Hole Simulator
Below are 12 single-player Steam games similar to Black Hole Simulator, 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 Black Hole Simulator page.
Ranked picks
- 1

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

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

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

Planet Architect
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.
A planet-building sandbox where you create entire worlds from the ground up. Generate unique planets, shape vast landscapes, and use interconnected simulations inspired by real-world processes to bring your fantasy planet to life.
- 5

Flower Design
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.
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.
- 6

Astronomy3D: Artemis II
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Adventure with Black Hole Simulator.
Explore more than 2,900 carefully selected photos from the Artemis II mission in an interactive 3D space, featuring distant views of Earth, the Moon's far side, ancient craters, earthrise, earthset, and a solar eclipse. Photo credit: NASA / Artemis II crew
- 7

Thrive
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.
An evolution simulation game. Take control of your species in the environment and edit your species as a whole. Compete with other evolving species for resources on an alien planet.
- 8

Tree Bonsai
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.
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.
- 9

Plankton
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.
Minimalist style game : plankton simulation, an electronic pet generated by math codes. Under your care it will slowly grow up and evolve.
- 10

Jellyfish
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Adventure with Black Hole Simulator.
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.
- 11

Flower Design Ⅱ
Single-player alternative to Black Hole Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Black Hole Simulator.
An artistic floral arrangement simulation game, a vase of flowers can track your mood at the moment.
- 12

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