Single-player games like Helium Rain
Below are 13 single-player Steam games similar to Helium Rain, 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 Helium Rain page.
Ranked picks
- 1

X3: Terran Conflict
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Strategy with Helium Rain.
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!
- 2

X4: Foundations
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Strategy with Helium Rain.
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.
- 3

Astrox Imperium
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Indie with Helium Rain.
Astrox Imperium is a relaxing space game where you fly around a generated universe. Mining, Fighting, Building, Exploring, and Surviving. What makes this game unique? You have complete control of how it plays. A robust sandbox and lots of MOD tools. Make it your game, and play it your own way.
- 4

Interstellar Transport Company
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Simulation with Helium Rain.
Build a galactic transportation empire and supply humanity with everything it needs to colonize the stars. In this sci-fi logistics simulator, grow your company from a local transport agency into an interstellar logistics behemoth! Singleplayer, vs AI, and online multiplayer.
- 5

Evochron Legacy SE
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Indie and Simulation with Helium Rain.
Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.
- 6

Void Destroyer 2
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Strategy with Helium Rain.
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.
- 7

Rebel Galaxy
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Indie with Helium Rain.
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.
- 8

Empyrion - Galactic Survival
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Strategy and Indie with Helium Rain.
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
- 9

No Man's Sky
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action with Helium Rain.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 10

X Rebirth
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Simulation with Helium Rain.
In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.
- 11

Elite Dangerous
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Strategy with Helium Rain.
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.
- 12

Total War: WARHAMMER II
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Action and Strategy with Helium Rain.
Strategy gaming perfected. A breath-taking campaign of exploration, expansion and conquest across a fantasy world. Turn-based civilisation management and real-time epic strategy battles with thousands of troops and monsters at your command.
- 13

Astral Shipwright
Single-player alternative to Helium Rain — playable solo, no multiplayer required. Shares Simulation with Helium Rain.
Build and upgrade your personal ship to travel around a strange planet.