Single-player games like Gas Giant Voyage
Below are 12 single-player Steam games similar to Gas Giant Voyage, 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 Gas Giant Voyage page.
Ranked picks
- 1

Frontiers Reach : Mercenaries
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
Step into the shoes of a mercenary on the edge of human occupied space as you engage in an immersive world of survival, faction warfare, and a fight to stop an alien empire from destroying human life on the frontier of outer space.
- 2

iDentity Rebels
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Adventure and RPG with Gas Giant Voyage.
Online Open World RPG Shooter accompanied by a captivating story. Filled with an array of encounters ranging from Terrifying to Heroic!
- 3

怪谈
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Adventure and RPG with Gas Giant Voyage.
Ghost Stories is a Lovecraftian co-op adventure. As investigators on a mysterious island, uncover secrets and buried treasure while surviving escalating danger, shifting weather, random events, and deadly monsters.
- 4

Morte Accendere
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
A sci-fi zombie infected third or first person action with elements of parkour, combat with weapons or hand to hand, many modes of transportation. Ability to craft items and build your safe zone.
- 5

HellFull - The Last Hope
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
Crafted over 7 years by sole developer Niël, HellFull - The Last Hope is just beginning! Featuring 5 modes, Course of Slayers, immersive Singleplayer, action-packed Multiplayer, Hellmode's wave survival, and a future open-world! It offers something for everyone! The journey will keep evolving!
- 6

The Dreamland
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
This is a small game. All you need to do is live
- 7

Subnautica
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
- 8

Satisfactory
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!
- 9

The Planet Crafter
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Adventure with Gas Giant Voyage.
A space survival open world terraforming crafting game, designed for 1 to 10 players. Alter the ecosystem of an inhospitable planet to render it habitable for humanity. Survive, gather resources, and build your base. Then, generate oxygen, warmth, and pressure to create a brand new biosphere.
- 10

ASTRONEER
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
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.
- 11

Factorio
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Simulation with Gas Giant Voyage.
Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.
- 12

Breathedge
Single-player alternative to Gas Giant Voyage — playable solo, no multiplayer required. Shares Indie and Adventure with Gas Giant Voyage.
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.