Single-player games like Celestial Routes
Below are 8 single-player Steam games similar to Celestial Routes, 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 Celestial Routes page.
Ranked picks
- 1
Astro Traveler
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Action and Indie with Celestial Routes.
A retro style space sim where you mine, trade, bounty hunt, pillage, and explore. In this game you choose you own path as you navigate the galaxy while balancing faction alligence and legality of your actions.
- 2
Chorus
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Action and Adventure with Celestial Routes.
Take control of Nara on a quest to destroy the dark cult that created her. Unlock devastating weapons & mind-bending abilities in an evolution of the space-combat shooter. Along with Forsaken, her sentient starfighter, explore ancient temples, engage in zero-g combat & venture beyond waking reality.
- 3
Avorion
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Action and Indie with Celestial Routes.
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.
- 4
Underspace
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Action and Indie with Celestial Routes.
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with Day 1 mod support and a planned PvP/co-op multiplayer on the Early Access roadmap. You're going to need a bigger ship.
- 5
Galactic Command Echo Squad SE
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Action and Indie with Celestial Routes.
Galactic Command Echo Squad SE is a high-end and very challenging space/planetary combat game. It offers a thrilling campaign, instant action combat sessions as well as a sandbox mode allowing you to explore the game's universe while battling hostile Insurgent forces among others.
- 6
SpaceEngine
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Indie and Casual with Celestial Routes.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
- 7
Evochron Mercenary
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Action and Indie with Celestial Routes.
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
- 8
Create Your Own Universe
Single-player alternative to Celestial Routes — playable solo, no multiplayer required. Shares Indie and Adventure with Celestial Routes.
Create Your Own Universe is a survival, crafting, exploration, base building, third person, open world, go anywhere you see on screen space game.