Single-player games like Nightmare Within
Below are 8 single-player Steam games similar to Nightmare Within, 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 Nightmare Within page.
Ranked picks
- 1

The Backrooms Project
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Action and Indie with Nightmare Within.
Scientists made a new discovery about the Backrooms. Noclipping out of bounds in normal reality was a myth for long, but now it can be real! Now they are looking for subjects to test it on civil people. There are already scientists inside, so you have nothing to worry about, they say. Or do you?
- 2

Clink
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Indie and Adventure with Nightmare Within.
You are a lonely woman, secluded in a house with your cat... and the secrets of the past. What hides within your mind — illness, or something otherworldly? Nightmares and reality intertwine… everything is so foggy. Do you have the courage to remember what happened?
- 3

Don't Be Afraid
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Action and Indie with Nightmare Within.
Don't Be Afraid is an adventure horror game, that allows you to personate a boy, kidnapped by a psychopath. You have to survive, escape and find out how you were kidnapped. Exploring the gigantic, mysterious house of your torturer, you will soon reveal many secrets, hidden inside it’s walls…
- 4

Platform 8
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Indie and Adventure with Nightmare Within.
You are trapped on a train that runs forever. Keep an eye out for anomalies and find a way out.
- 5

Visage
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Action and Indie with Nightmare Within.
Visage is a first-person psychological horror game. Explore a mysterious ever-changing house in a slow-paced, atmospheric world that combines both uncannily comforting and horrifyingly realistic environments, and enjoy a genuinely terrifying experience.
- 6

In The Backrooms
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Action and Indie with Nightmare Within.
"God save you if you hear something wandering around nearby, because it sure as hell has heard you.."
- 7

Amnesia: A Machine for Pigs
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Action and Indie with Nightmare Within.
From the creators of Amnesia: The Dark Descent and Dear Esther comes a new first-person horrorgame that will drag you to the depths of greed, power and madness. It will bury its snout into your ribs and it will eat your heart.
- 8

The Exit 8
Single-player alternative to Nightmare Within — playable solo, no multiplayer required. Shares Indie and Adventure with Nightmare Within.
You are trapped in an endless underground passageway. Observe your surroundings carefully to reach "The Exit 8".