Single-player games like Starsim
Below are 11 single-player Steam games similar to Starsim, 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 Starsim page.
Ranked picks
- 1
Halcyon 6: Starbase Commander
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and Indie with Starsim.
Halcyon 6: Starbase Commander is a retro space strategy RPG with base building, deep tactical combat, crew management and emergent storytelling.
- 2
Starpoint Gemini Warlords
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and RPG with Starsim.
Strategy from the front lines! Starpoint Gemini Warlords combines 3rd person capital spaceship combat with 4X strategy and RPG gameplay elements. Build mighty war fleets and send them into battle or lead them into combat yourself. Become the Warlord and conquer the Gemini system!
- 3
Space Scum
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and RPG with Starsim.
Lead a band of mercenaries through battle after battle in this Sci-Fi, turn-based RPG. Fight your way across different planets, earning loot and equipment to outfit your team – and remember, no option is off the table when survival is on the line.
- 4
Halcyon 6: Starbase Commander (LIGHTSPEED EDITION)
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and Indie with Starsim.
A retro space strategy RPG with base building, deep tactical combat, crew management and emergent storytelling. Halcyon 6: Lightspeed Edition is a massively enhanced version of the Award Winning indie strategy RPG, Halcyon 6.
- 5
Space Pirates and Zombies
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and Indie with Starsim.
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
- 6
The Long Journey Home
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and Indie with Starsim.
The Long Journey Home combines an open world full of galaxies, planets and anomalies with quests and mechanics of a rogue-like RPG. One destination. Endless adventures. Where will this journey take you?
- 7
Dust to the End
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and Indie with Starsim.
Nuclear war ended human civilization, but it could never uproot the evil within our hearts. Fight, trade, negotiate, raid– do whatever it takes to survive in the wasteland. You will have to be as clever as ruthless to thrive in a broken world, torn by war, cruelty, hunger and slavery.
- 8
Objects in Space
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy and Indie with Starsim.
Objects in Space is a retro space game centred on 2D point-and-click stealth action in a massive open world. Players have their own customisable ships and can meet people, become a trader, bounty hunter, explorer, scavenger or all of them at once.
- 9
Discard
Single-player alternative to Starsim — playable solo, no multiplayer required.
Discard - it is a sci-fi puzzle 2D-platformer inspired by old-school cinematic platformers. You must solve problems in order to survive on this dangerous planet.
- 10
Star TD
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy with Starsim.
Command your defense in an ever-changing roguelite TD. Harvest resources from mine nodes, explore the fog of war, and repel alien waves. With a deep branching tech tree and permanent progression, every defeat is just a step toward ultimate power. Build. Die. Research. Repeat.
- 11
Stack the Spells
Single-player alternative to Starsim — playable solo, no multiplayer required. Shares Strategy with Starsim.
Stack the Spells is a fantasy roguelike deckbuilder where every card is a step toward your survival. Scale a shifting, procedurally generated path, outsmart grim monstrosities in tactical turn-based combat, and forge a legendary deck to solve the mysteries of a world in ruin.