Single-player games like Astrophobia
Below are 9 single-player Steam games similar to Astrophobia, 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 Astrophobia page.
Ranked picks
- 1

Below, Rusted Gods
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
You are the lifeline supporting an expedition into the unknown. Keep both yourself and your squad alive by interpreting instrument readings, explore the facilities, and uncover something ancient and eager to be born.
- 2

Strange Absurdity: DOG STAR
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Adventure with Astrophobia.
You're alone in a remote tower. Do your job, keep the signals flowing, and take care of your dog. Things bleeding over from the other side want you dead. Defend your workplace from them.
- 3

Departure of Darkness
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
Emma is forced to clear a horrifying parasite-infested airport as she fights to save her brother. In this 90s style Retro Survival Horror, you’ll have the option to save or leave behind fellow survivors during your adventure. However, your choices will have consequences...
- 4

Poolscape
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
Explore the Poolrooms as if it were lost media from 1998.
- 5

Invasion of The Halloween Fiends
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
Invasion of The Halloween Fiends is a First-Person Retro horror game that takes place on Halloween Night. Strangers keep visiting you looking for candy. Some of them may not be so friendly. Will you be able to survive Halloween Night?
- 6

SOMA
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 7

Stars Die
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
A giant cathedral of flesh has appeared in the middle of the ocean on a dying world. A small group of scientists are secretly investigating it when a mysterious woman appears, facing an impossible task.
- 8

Crow Country
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie with Astrophobia.
The year is 1990. It’s been two years since the mysterious disappearance of Edward Crow and the abrupt closure of his theme park, Crow Country. But your arrival has broken the silence, Mara Forest. If you want answers, you’ll have to venture deep into the darkness of Crow Country to find them…
- 9

The Edge of the Backrooms
Single-player alternative to Astrophobia — playable solo, no multiplayer required. Shares Indie and Adventure with Astrophobia.
After discovering a strange anomaly on Jupiter's moon, Europa, you find yourself in the outer reaches of a dangerous, uncanny complex.