Single-player games like helionaut
Below are 16 single-player Steam games similar to helionaut, 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 helionaut page.
Ranked picks
- 1

No Man's Sky
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Adventure with helionaut.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 2

Remains
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Indie with helionaut.
Remains - survival in outer space orbiting the planet. Explore the area. Find a way to restore oxygen. Create tools for your needs. Beware of the dangers of outer space. Build your shelter in orbit and try not to die!
- 3

Astromine
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Adventure with helionaut.
Astromine is a survival mining game about scavenging fully destructible planets. Designed for 1 to 4 players. Land on planets and gather enough materials to fight off alien creatures, fight robot factions, build structures and spaceships, and conquer the solar system
- 4

Breathedge
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Indie with helionaut.
Survive in outer space! Together with your immortal chicken, discover the truth behind your sudden spaceship crash. Craft tools, pilot vehicles, and even control space stations to survive and explore the wreckage.
- 5

Space Trash Scavenger
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Indie with helionaut.
Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts. Build and automate your Space Rig to process scavenged trash. Craft, trade and fight your way home in this interstellar, open-world survival sandbox.
- 6

Starpoint Gemini 3
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Indie with helionaut.
Fight, loot, explore and craft in the living open world of Starpoint Gemini 3. Assemble your trusty ship and boost your RPG skills to face all challenges.
- 7

Don't Starve Together
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Indie with helionaut.
Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
- 8

ASTRONEER
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie and Adventure with helionaut.
Interact with strange new worlds in a unique and tactile way, molding the environment itself as if it were clay in your hands. Build your base, master resource management, automate your production lines, and more as you unravel the mysteries of the universe, alone or with friends.
- 9

Stacklands
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie and Simulation with helionaut.
Stacklands is a village builder where you stack cards to collect food, build structures, and fight creatures. 🃏 For example, dragging a Villager card on top of a Berry Bush card will spawn Berry cards which the villagers can eat to survive. 🃏 Play your cards right and expand your village!
- 10

Simmiland
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie and Simulation with helionaut.
Simmiland is a god-like card game. In this game you indirectly influence a small civilization by manipulating their surroundings by playing cards 🃏🃏🃏 Playing cards on different biomes and objects will result in different findings. The way you play the game will define how mankind will develop!
- 11

Grunn
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie and Adventure with helionaut.
A gardener gets hired for maintenance work over the weekend. A simple task, but strangely some tools are missing… The owner of the garden isn't around, and their house is off-limits. Perhaps new tools can be found in the mysterious town, or maybe some of the reserved townsfolk have seen them?
- 12

pyramida
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie with helionaut.
A village builder / survival game. Expand your village by day and fight monsters at night. Learn how to survive, and try to prevent your imminent demise . . .
- 13

clickyland
Single-player alternative to helionaut — playable solo, no multiplayer required.
clickyland is a tower defense village builder where clicks are your main resource. Use clicks to harvest resources, fight enemies and manage your village, but use them wisely as you only get 20 clicks every day! Can you reach day 100?
- 14

fishy
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Action and Indie with helionaut.
A game about a hungry fish 🐟 Eat to grow bigger, but watch out for fishes bigger than you! Grow big, strong and explore! Can you escape the pond?
- 15

White Lavender
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie and Adventure with helionaut.
A challenging adventure game with RPG-elements. Be a bug, fight other critters with swords and magic, collect powerful items such as pencils and teaspoons, meet cool characters, and up your fashion game on a journey to brew a special tea!
- 16

Luckitown
Single-player alternative to helionaut — playable solo, no multiplayer required. Shares Indie and Simulation with helionaut.
Luckitown is a turn-based tower defense where you roll dice to build new structures and cast spells to defend your town.