Single-player games like Quantum Sleeper
Below are 8 single-player Steam games similar to Quantum Sleeper, 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 Quantum Sleeper page.
Ranked picks
- 1
Backrooms: Lost Tape
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
You work in the cinema as an usher and accidentally fell into the Backrooms, now being trapped, needing to unravel the mysteries of the yellow rooms in order to get out of this place, but be careful, there are entities that will be in your way.
- 2
ROUTINE
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
ROUTINE is a First Person Sci-Fi Horror set on an abandoned lunar base designed around an 80s vision of the future. Explore and investigate your surroundings as you survive against unknown threats.
- 3
Maid of Sker
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
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!
- 4
Apartment No 129
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
Emir, who has an interest in mysterious events, steps alone into the abandoned apartment known as "Apartment No 129" to trace the trail of a paranormal event that occurred in 2009 and shook the country. However, he will find himself in an unexpected confrontation within this horror apartment.
- 5
DYSTHANASIA
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
You awaken in a cold unfamiliar building crawling with grotesque creatures. Stave off terror using your wits and anything you can find, then try to make it out alive in this highly atmospheric environmental horror game.
- 6
Absolute Fear -AOONI- / 最恐 -青鬼-
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
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.
- 7
HORROR TALES: The Wine
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
Explore a post-pandemic fictional Mediterranean island and confront your fears! Immerse yourself in a seemingly abandoned city and struggle to find a precious Banydebosc red wine bottle to cure your loved ones. But be aware; your Nemesis is hunting you. Indie Jumpscares included! :D
- 8
Pacify
Single-player alternative to Quantum Sleeper — playable solo, no multiplayer required. Shares Action and Indie with Quantum Sleeper.
An online co-op horror game where you pacify, weaken and capture supernatural creatures for PAH Inc. Each level has a different story, unique monsters, and multiple endings. Play single player or together with up to 6 friends. Includes proximity voice chat with fun effects.