Single-player games like World of One
Below are 9 single-player Steam games similar to World of One, 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 World of One page.
Ranked picks
- 1

Claustrophobia
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
Claustrophobia offers a scary and dark horror experience filled with blood boiling moments, first you will have to silently move your way through the darkness, until you can pick up arms and discover the truth. Can you figure out what is hiding in this grueling subterranean facility?
- 2

Reflection: The Greed
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie with World of One.
What's the worst that can happen from reading a decrepit book? Jon Oz, who's been sifting through pages of a book that shouldn't even have its cover opened, is about to confine himself into a nightmare. Will you end the nightmare when darkness falls? Or will you be a prisoner to your own reflection?
- 3

Classified Stories: The Tome of Myrkah
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
Classified Stories: The Tome of Myrkah is a first-person, micro-adventure game that tells the story of P.I. Jim Morrison's encounters with the occult and the extraordinary. Explore your surroundings and solve puzzles in order to uncover the harrowing story of your friend's descent into insanity.
- 4

Evil Nightmares
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
The Bell is ringing and there is no escape. The world is quickly shrouded in darkness and horrifying creatures lurk for Marv. He must face his fears and find a way out of this nightmare or he will be trapped in hellfire forever.
- 5

Blossoming Yandere 満開 ヤンデレ
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
A girl was sleeping in the garbage outside of Kazuki's apartment, until he decided to take her in. Now a home for two, he must remember that all actions have consequences, and words can be laced with poison. But you know that all too well, don't you?
- 6

Psychomachia
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
Confront your deepest fears in Psychomachia, trapped in a nightmarish loop at the heart of the dorms of mental instability. Explore the intricacies of the human mind, faced with terrifying manifestations of madness.
- 7

Scorn
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
Scorn is an atmospheric first-person horror adventure game set in a nightmarish universe of odd forms and somber tapestry.
- 8

CARRION
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
CARRION is a reverse horror game in which you assume the role of an amorphous creature of unknown origins, stalking and consuming those that imprisoned you.
- 9

LIMBO
Single-player alternative to World of One — playable solo, no multiplayer required. Shares Indie and Adventure with World of One.
Uncertain of his sister's fate, a boy enters LIMBO