Single-player games like Vortex: The Gateway
Below are 12 single-player Steam games similar to Vortex: The Gateway, 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 Vortex: The Gateway page.
Ranked picks
- 1

The Forest
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Action and Indie with Vortex: The Gateway.
As the lone survivor of a passenger jet crash, you find yourself in a mysterious forest battling to stay alive against a society of cannibalistic mutants. Build, explore, survive in this terrifying first person survival horror simulator.
- 2

Project Castaway
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Action and Adventure with Vortex: The Gateway.
Project Castaway is a survival crafting title set in the Pacific Ocean. Live the life of a stranded castaway, with only yourself - and the island's inhabitants - for company! Sail the ocean, hunt, explore unique islands and gather resources as you fight for survival.
- 3

Subnautica: Below Zero
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Indie and Adventure with Vortex: The Gateway.
Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica.
- 4

ARK: Survival Evolved
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Action and Indie with Vortex: The Gateway.
Stranded on the shores of a mysterious island, you must learn to survive. Use your cunning to kill or tame the primeval creatures roaming the land, and encounter other players to survive, dominate... and escape!
- 5

Survival: Fountain of Youth
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Action and Indie with Vortex: The Gateway.
Survival: Fountain of Youth is a challenging single-player open-world adventure game set on the Caribbean islands. Survive as a shipwrecked 16th-century explorer, craft tools and shelter, and uncover the secrets of both an ancient civilization and your own fate.
- 6

Stranded Deep
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Indie and Adventure with Vortex: The Gateway.
Take the role of a plane crash survivor stranded somewhere in the Pacific Ocean. Come face to face with some of the most life threatening scenarios that will result in a different experience each time you play. Scavenge. Discover. Survive.
- 7

Subterrain
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Indie with Vortex: The Gateway.
Uncompromising Sci-Fi survival on Mars! Manage the entire colony single-handed! Craft, Research, Explore and Fight against evolving mutants. Vast open world and randomly generated levels to explore! Can you survive long enough to escape the horror?
- 8

Fade to Silence
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required.
Fade to Silence is a single-player and co-op survival adventure set in a post-apocalyptic world that is frozen in an eternal winter. Snow and ice have shaped a merciless landscape. Nature is corrupted. Monstrous creatures out of an Eldritch horror dream roam the frozen wasteland.
- 9

The Elder Scrolls V: Skyrim
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required.
EPIC FANTASY REBORN The next chapter in the highly anticipated Elder Scrolls saga arrives from the makers of the 2006 and 2008 Games of the Year, Bethesda Game Studios. Skyrim reimagines and revolutionizes the open-world fantasy epic, bringing to life a complete virtual world open for you to explore any way you choose.
- 10

Subnautica
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Indie and Adventure with Vortex: The Gateway.
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.
- 11

reconquest
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required.
Reconquest is a real-time strategy base building game. After World War III, mankind got close to extinction. You have to reconquer Earth by making better strategic decisions than your opponents.
- 12

Starway Fleet
Single-player alternative to Vortex: The Gateway — playable solo, no multiplayer required. Shares Action with Vortex: The Gateway.
Experience the heat of space combat and discover the Universe as a fighter pilot assigned to the fleet. Be the famous fighter ace, let the whole Universe know your name!