Single-player games like Astrox Imperium
Below are 12 single-player Steam games similar to Astrox Imperium, 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 Astrox Imperium page.
Ranked picks
- 1
Astrox: Hostile Space Excavation
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Indie and Adventure with Astrox Imperium.
Exiled to a deep space mining sector, you are left with a crappy ship, a laser, and a small mining beam. It is up to you to survive by working your way through the galaxy. Mine asteroids, refine and trade the ore, buy upgrades for your ship, hunt pirates... you get it.
- 2
Void Destroyer 2
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
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.
- 3
Rebel Galaxy
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
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.
- 4
Celestial Command
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.
- 5
Star Valor
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
Choose your own destiny as you explore an open-world procedurally generated galaxy where anything is possible. Become a miner, a trader, a bounty hunter, a pirate, or perhaps a jack of all trades. Start off small and build your way to the top but remember with every action, comes consequences.
- 6
Gaia Beyond
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
Gaia Beyond is a handcrafted 2D Action-RPG, an exploration mix built around the core features fighting, mining and trading. Your decisions are footprints within a vast non-linear solar system. Forge alliances among numerous factions and develop relations with hundreds of NPCs.
- 7
Elite Dangerous
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Adventure with Astrox Imperium.
Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.
- 8
Endless Sky
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
- 9
X4: Foundations
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Simulation with Astrox Imperium.
Your journey to building a vast space empire begins behind the controls of a single ship. Explore, trade, fight, and build as you rise to command fleets, stations, and entire economies in a living, fully simulated universe that reacts to every decision.
- 10
Terraria
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
Dig, fight, explore, build! Nothing is impossible in this action-packed adventure game. Four Pack also available!
- 11
TerraTech
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Indie with Astrox Imperium.
TerraTech is an open-world, sandbox adventure game, where you design and build your own creations through a mix of crafting, combat and discovery. Design vehicles from a huge library of blocks. Scavenge, craft and buy new parts to survive and become the ultimate planetary prospector.
- 12
No Man's Sky
Single-player alternative to Astrox Imperium — playable solo, no multiplayer required. Shares Action and Adventure with Astrox Imperium.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.