Single-player games like Cosmos Conquer
Below are 8 single-player Steam games similar to Cosmos Conquer, 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 Cosmos Conquer page.
Ranked picks
- 1

nStations
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Indie with Cosmos Conquer.
Construct and manage your colony anytime, anywhere, any device!!!!
- 2

Dungeon Dominator
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Simulation with Cosmos Conquer.
Build and expand your own warm, cozy dungeon where your minions live miserable lives and do their evil things. Take part in thrilling battles against humans, angels, and powerful bosses, defending your domain. Conquer the world by commanding an army with a wave of your hand!
- 3

Seven Wonders
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Indie with Cosmos Conquer.
Seven Wonders is an ancient city-building game. It brings you back to ancient times, where you have to build the seven wonders of the ancient world. You have to manage resources and labor to build the wonders.
- 4

EarthX 2
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Simulation with Cosmos Conquer.
Build and run your own space company. Launch reusable rockets, complete missions, and run a satellite internet network. Manage your factories and fleet, supply colonies on the Moon and Mars, and work toward terraforming the Red Planet.
- 5

soul Interface
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Indie and Simulation with Cosmos Conquer.
You explore an alien machine, learn to operate it, create virtual organisms, and grow an artificial ecosystem inside it. You design species down to individual atoms and watch them fight for survival. You then send successful species to other players to leech energy from them and power your machine.
- 6

Godmaker: Patrons & Prophets
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Indie with Cosmos Conquer.
Grow from patron to godhood in your own fantasy world! Build your gathering of followers, manipulate the mortal realm and grow your godhood to become the highest power in reality.
- 7

Cyber Prison Management
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Simulation with Cosmos Conquer.
You are tasked with managing 8 prisoners in a flying space prison for 30 days with your camera system. You’ll need to manage the stock market, hostile ships, and keep prisoners in line. Or play as one of the prisoners, hiding and trying to escape. But be careful - danger is always around the corner.
- 8

Kingdom Isles
Single-player alternative to Cosmos Conquer — playable solo, no multiplayer required. Shares Strategy and Simulation with Cosmos Conquer.
Build a mighty kingdom, trade resources on the market, and defend your land against Viking raiders! In this strategic city builder, each run presents its own unique challenges. Plan ahead, balance interests, and make difficult choices to stay on the throne.