Single-player games like Devil's Door
Below are 8 single-player Steam games similar to Devil's Door, 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 Devil's Door page.
Ranked picks
- 1

Calvar - The Darkest Gate
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Calvar – The Darkest Gate is a relentless first-person horror descent into madness, illusion, and decay. Crafted by a dedicated two-man team, this passion project drags you into a world where reality fractures and every step feels forbidden. Nothing is certain. No one is safe.
- 2

Ralkoz
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Ralkoz is a single-player first-person action-horror game that tells the story of a man confronting the unknown after a life filled with loss. In abandoned forests, among mysterious structures, and across ancient times. Surviving is not enough — you must also uncover the truth.
- 3

Spiritus Sancti
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Spiritus Sancti is a first-person psychological horror where your voice is your weapon. Speak sacred rites through your microphone to repel, stun, and exorcise the forces of darkness. Every encounter is real-time, every word a test of faith. An experience like no other.
- 4

Agony
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Agony is a first-person, survival horror set in hell. You will begin your journey as a tormented soul within the depths of hell without any memories about your past. The special ability to control people on your path, and possess demons, gives you the measures to survive.
- 5

Pyromaniac
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Play as Nikolas, a 20-year-old guy who found himself lost in an abandoned city... or so he thought it was at first. Explore the city, defend yourself from monsters, and find answers to what is really going on.
- 6

Maid of Sker
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Maid of Sker is a first-person survival horror, set in a remote hotel with a gory and macabre history from Welsh folklore. Brave the nightmares of the Quiet Ones. Do not panic…don’t even breathe!
- 7

Remorse: The List
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Remorse: The List is a classic survival horror game where the player must figure out what is happening in the little hungarian town of Hidegpuszta, and your only clue is a list that doesn't make much sense. Exploring will be the key to unveiling its secrets and get out of there alive.
- 8

Outlast 2
Single-player alternative to Devil's Door — playable solo, no multiplayer required. Shares Action and Indie with Devil's Door.
Outlast 2 introduces you to Sullivan Knoth and his followers, who left our wicked world behind to give birth to Temple Gate, a town, deep in the wilderness and hidden from civilization. Knoth and his flock are preparing for the tribulations of the end of times and you’re right in the thick of it.