Single-player games like Harthorn
Below are 19 single-player Steam games similar to Harthorn, 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 Harthorn page.
Ranked picks
- 1
Horror in the forest
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action with Harthorn.
Too much has gone wrong — and now, together with your companion, you must uncover what hides among the trees.
- 2
Observer: System Redux
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Indie and Adventure with Harthorn.
A first‑person cyberpunk horror detective story set in a decaying, neon‑scarred future. As an Observer who invades minds to hunt for clues, you will sift through corrupted memories to track down a mysterious killer and confront your own dark past.
- 3
One Hunt
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Stranded in a blighted tundra with an ancient beast that is on the hunt. Keep your fingers warm and your shotgun loaded and you just might make it out alive.
- 4
Building 847
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Indie and Adventure with Harthorn.
New Mexico, 1986. You're a private detective, investigating a bizarre incident that occurred inside a building in a small town. Find clues, visualize past events and learn about this alternate-reality.
- 5
Sincognito
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
An social deduction investigation horror game where one of you is secretly possessed by a Deadly Sin. Use stealth and proximity chat to cooperate or deceive as you gather clues and compare findings to deduce which Sin is haunting the castle.
- 6
Reality Breach
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Reality Breach is a first-person psychological horror game where your own creation turns against you. Step into the shoes of an exhausted indie developer trapped in a shifting home studio, evading a relentless entity born from your own corrupted code.
- 7
FINIS ACTUS
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
1891 London. In the mansion of a famous illusionist, the connection between reality and madness is severed. Many who trusted their intellect have been lost in these corridors. Before the curtain falls, will you see beyond the illusion, or will you become part of this tragedy?
- 8
Candlehead
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Explore a dark and eerie first person folk horror game where your doom flickers in the form of a candle barely visible through the dusky gloom.
- 9
Outlast
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
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.
- 10
Obscure
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Adventure with Harthorn.
For some time now, Leafmore High School has been the setting for unexplained disappearances. In this survival horror game, you take control of a group of 5 American students. With your friends, you try to unravel the mysterious happenings at this unremarkable-looking school. The night will be long and survival not will not be easy...
- 11
Resident Evil 7 Biohazard
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Adventure with Harthorn.
Fear and isolation seep through the walls of an abandoned southern farmhouse. "7" marks a new beginning for survival horror with the “Isolated View” of the visceral new first-person perspective.
- 12
White Day: A Labyrinth Named School
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Notorious cult-classic Korean horror. Sneak into school at midnight to return your sweetheart's diary and get caught in a terrifying game of cat and mouse. Explore haunted hallways, solve classic survival horror puzzles and escape the clutches of a killer Janitor who is out for your blood.
- 13
The Suicide of Rachel Foster
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Indie and Adventure with Harthorn.
Coming back to the family hotel after years, a young woman finds herself trapped with the ghosts from her past and an old cellular telephone as the only way to unveil a terrible truth.
- 14
The Swine
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Say goodbye to southern hospitality in the backwoods of rural America. The Swine is a short horror experience that explores isolation, witchcraft, and unforeseen consequences in your rural homestead.
- 15
Witching Hour
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Witching Hour is a horror story that takes you out of your family home and across the quiet town of Hollow Hills. Your fate depends on making difficult choices, your relationship with your family, and confrontations with the matriarch of the town’s affliction with witchcraft, Lucilia.
- 16
SILENT HILL 2
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Adventure with Harthorn.
Investigating a letter from his late wife, James returns to where they made so many memories - Silent Hill. What he finds is a ghost town, prowled by disturbing monsters and cloaked in deep fog. Confront the monsters, solve puzzles, and search for traces of your wife in this remake of SILENT HILL 2.
- 17
Deathbloom: Chapter 1
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Inspired by classic survival horror. Bachman Manor sprawls into a maze of corridors, bedrooms, foyers, and more. Filled with puzzles, traps, and hidden passageways that explore the secrets of its dark history and occupants.
- 18
Deathbloom: Chapter 2
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Continue your journey through Bachman Manor as you inch closer to freedom, or towards your mysterious friend Christina and her candle-lit secrets. Going deeper into the estate reveals more locations like the Abandoned Wing, Lower House, and the bunker complex "Salvation".
- 19
Jawbreaker
Single-player alternative to Harthorn — playable solo, no multiplayer required. Shares Action and Indie with Harthorn.
Will you survive when the world falls apart? Jawbreaker is a punishing stealth & survival horror game that will have you running, hiding, and fighting in a terrifying gang-infested society on the verge of collapse. Though that’s not all, once the sun goes down the true fear begins...