Single-player games like Deep Line
Below are 8 single-player Steam games similar to Deep Line, 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 Deep Line page.
Ranked picks
- 1
The Transference
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action and Indie with Deep Line.
Escape from your own house, in which you have been locked up. But be careful, you will not be alone in your captivity. Immerse yourself in this first-person horror adventure, full of family secrets and betrayals. And find out who and why they locked you up.
- 2
INROOMS
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Indie and Adventure with Deep Line.
A cooperative psychological horror experience up to four players where you and your friends must survive the deepest, most distorted liminal spaces of the Inrooms, the deepest levels of the Backrooms.
- 3
Syndrome
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action and Adventure with Deep Line.
Syndrome, a sci-fi survival horror game that places you in a living hell inside a doomed starship. Find out what happened to your lost crew. Run. Hide. Fight. Survive.
- 4
Outlast
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action and Indie with Deep Line.
Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.
- 5
The Outlast Trials
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action and Indie with Deep Line.
Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?
- 6
Dementium: The Ward
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action and Indie with Deep Line.
Classic DS horror reborn. Awaken in an abandoned hospital with no memory, no escape and unspeakable horrors lurking in the dark. The horror classic Dementium: The Ward returns, enhanced for 4K display and Steam Deck Verified, where every shadow hides a new threat, and every corridor a new nightmare.
- 7
Alien: Isolation
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action with Deep Line.
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.
- 8
Absolute Fear -AOONI- / 最恐 -青鬼-
Single-player alternative to Deep Line — playable solo, no multiplayer required. Shares Action and Indie with Deep Line.
20 years after the birth of the legendary horror game "AOONI"... A completely new first-person, 3D horror stealth action "Absolute Fear -AOONI-" is now available! Players take on the role of a younger sister searching for her older sister in a mysterious mansion where AOONI roam.