Games like Interstellaria
Managing a fleet across a dangerous galaxy. Every star and planet holds untold riches and dangers. Each encounter will require skills in trading, diplomacy, and combat. Allocate power to engines, charge all weapons, and take on the worst the galaxy has to handle.

Top 12 games similar to Interstellaria
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Cosmonautica
Cosmonautica is a fresh take on space trading in a procedurally generated universe, paired with quirky humor for your intergalactic enjoyment.
AdventureIndieSimulation - 2

Rebel Galaxy
Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.
ActionAdventureIndie - 3

X3: Terran Conflict
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!
ActionSimulationStrategy - 4

Sins of a Solar Empire®: Rebellion
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
ActionIndieSimulation - 5

Star Trek: Infinite
Star Trek: Infinite is a grand strategy experience that lets you play your own Star Trek story as the leader of one of four major factions in the galaxy. Follow the specially crafted story or blaze your own trail in the first Star Trek grand strategy game.
AdventureSimulationStrategy - 6

Sins of a Solar Empire: Trinity®
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
IndieStrategy - 7

Evochron Mercenary
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
ActionIndieSimulation - 8

Star Traders: Frontiers
You are the captain of a starship venturing through a massive open universe. Customize your crew and take command at the helm of your very own ship as you explore a galaxy torn apart by internal strife, alien threats, and political intrigue.
RPGStrategy - 9

Void Destroyer 2
Start with nothing... End with everything! All you have is a basic ship, barely fit for combat, with it you'll start your journey and empire. A open world space sandbox, inspired by and expanding the classics.
ActionAdventureIndie - 10

Starpoint Gemini 2
Captain your own space ship and roam the galaxy in 3D in this tactical space simulator with tons of RPG depth ! Space has never looked so inviting - but images can betray...It has been two years since the end of the second Gemini war, the situation in the wartorn system is further from resolution than ever.
ActionRPGSimulation - 11

The Last Hope
You’ve made the biggest mistake in history. Now, you're the last hope. Explore the UK, Russia, Germany, Norway, Egypt, USA, Mars, and the Moon. Search for food, face creatures, travel through time, and fight to restore humanity. Survive or perish—your choices shape the future.
ActionAdventureCasual - 12

X: Beyond the Frontier
The Human Race had advanced to the point where we could travel among the stars, we developed giant automated machines to help us colonise other worlds, but there was a fault in their programming and they turned and attacked. Forcing us to lay a trap to protect Earth and exiling the Human race to stay on Earth once again.
SimulationStrategy
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imho.run is a Steam game recommender that combines collaborative filtering (ALS / iALS / EASE / LightGCN) with content-based scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted gameplay vibes from review text. The lists you see here are generated in seed mode — anchored on Interstellaria— so they answer the question “what plays like this?” rather than “what fits my library?”
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