Single-player games like Istrolid
Below are 10 single-player Steam games similar to Istrolid, 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 Istrolid page.
Ranked picks
- 1
Planetary Annihilation: TITANS
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy and Indie with Istrolid.
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
- 2
NEBULOUS: Fleet Command
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy with Istrolid.
Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.
- 3
Mindustry
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy with Istrolid.
An open-ended factory management game with RTS and tower defense elements.
- 4
From the Depths
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy and Indie with Istrolid.
Over 1000 unique components allow you to build and command voxel vehicles from the deep ocean to outer space! Forge strategies, allegiances and fleets strong enough to destroy eight deadly factions of the planet and reign supreme. A genre-defying mashup of simulation, building, RTS and RPG.
- 5
StarMade
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy and Indie with Istrolid.
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
- 6
Cosmoteer: Starship Architect & Commander
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy with Istrolid.
Design and simulate the starships of your dreams! Command your ship or fleet in epic battles and manage your crew while exploring a dangerous galaxy. Play alone or with friends, test your ships in online PvP, and let your imagination reach for the stars!
- 7
Factorio
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy and Indie with Istrolid.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 8
Avorion
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Indie with Istrolid.
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
- 9
Supreme Commander
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy with Istrolid.
For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.
- 10
Company of Heroes
Single-player alternative to Istrolid — playable solo, no multiplayer required. Shares Strategy with Istrolid.
Delivering a visceral WWII gaming experience, Company of Heroes redefines RTS by bringing the sacrifice of heroic soldiers, war-ravaged environments, and dynamic battlefields to life. Please visit the "Company of Heroes - Legacy Edition" page for additional user reviews.