Single-player games like Stellar Industrialist
Below are 15 single-player Steam games similar to Stellar Industrialist, 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 Stellar Industrialist page.
Ranked picks
- 1

A Game About Getting Bigger
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Simulation and Casual with Stellar Industrialist.
A Game About Getting Bigger is a loot-driven incremental game about feeding a growing black hole. Destroy celestial bodies to make the black hole at the center grow larger and larger.
- 2

New Stars
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
Expand your own galactic empire across new stars, research technologies, and challenge great alien powers in this immersive 4X grand strategy game. Build interstellar colonies, and starbases to gather more resources. Explore a unique galaxy full of secrets, great perils, and limitless possibilities.
- 3

Belt Colony
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
The year is 2040. You, an ex-sergeant, have signed a contract with a large mining corporation in the Belt. Mine ore, build out your outpost, travel to nearby asteroids and collaborate with other belters.
- 4

Periapsis: Gravity Slingshot
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
Lead humanity’s final journey beyond Earth. Launch ships, harness gravity slingshots, and explore distant star systems to make humanity multi-planetary.
- 5

Solar War
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy with Stellar Industrialist.
A turn-based grand strategy game in space, set in the near future: Defend Earth against an alien invasion from the edge of the Solar System and expand your campaign to push them back to their base.
- 6

Gemini Wars
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy with Stellar Industrialist.
Take control of a fleet commander returned from exile, rise through the ranks of the United Space Federation forces and join an epic war across the stars.
- 7

Deep Dark Forest
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
You will have to lead the civilization, develop the economy, enhance the technology, stabilize the people and colonize new galaxies; when encountering unknown civilizations, will you hide yourself or communicate with them in a friendly way? In this "dark forest", every decision will be crucial.
- 8

Shadow Empire
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
Shadow Empire is a deep turn-based 4X wargame with a unique blend of military focus, procedurally generated content and role-playing features. Players take the seat of the supreme ruler of a small nation, with the goal of reconquering a devastated planet.
- 9

Halley Mission: 2061
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy with Stellar Industrialist.
Embark on a sci-fi survival adventure on Halley's Comet as a retired astronaut on a top-secret mission. Build, manage limited resources, and survive the desolate space environment to complete your mission.
- 10

Galactic Simulator
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Simulation and Casual with Stellar Industrialist.
Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective. The game supports multiplayer mode. Create a unique galaxy with friends!
- 11

Galactic Simulator2: Stargate
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
Galactic Simulator 2: Stargate is a roguelite simulation game inspired by the Fermi Paradox and the Great Filter. Pilot your ship, gather resources, build stargates, and discover other civilizations as you explore an ever-evolving galaxy.
- 12

Inspiral: Echoes of Gravity
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.
- 13

Neuter Master
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
A lighthearted roguelite breeding game where you match animals on a customizable grid, earn gold with slot-machine-style combos, and balance breeding, sterilizing, and upgrades to keep your herd thriving year after year.
- 14

Idle Sailor
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Strategy and Simulation with Stellar Industrialist.
Idle Sailor is a relaxing idle adventure where you sail between world destinations, livestream your journey, capture underwater photos of unique fish, and unlock upgrades to make each voyage faster and more rewarding.
- 15

My Little Cosmos
Single-player alternative to Stellar Industrialist — playable solo, no multiplayer required. Shares Simulation and Casual with Stellar Industrialist.
My Little Cosmos is a light idle clicker game that runs quietly in the background. Keyboard input and mouse clicks from everyday computer use automatically drive the evolution of a universe, with inventory rewards dropping over time.