Single-player games like OneOne
Below are 8 single-player Steam games similar to OneOne, 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 OneOne page.
Ranked picks
- 1

Ansiolisis
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Adventure with OneOne.
Ansiolisis (or Anxiolysis) is a short interactive narrative text-based adventure over a dream of someone with anxiety.
- 2

The Simplest Game in the World
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Adventure with OneOne.
You can beat this game with any key on your keyboard. ANY key, I mean it.
- 3

放學後(After school)
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Adventure with OneOne.
After School is a short visual novel about an elementary school student who encounters an injured old woman on her way home from school, and is begged to help her walk home, but is forced to embark on a thrilling journey...
- 4

The Hidden and Unknown
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Adventure with OneOne.
The Hidden and Unknown is a story-based game, that aims to widen the perception of its audience in the areas of psychology and philosophy.
- 5

My Head On Your Body
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Adventure with OneOne.
You've moved to a new house where the previous owner was murdered. They never found his head. But, it has found you.
- 6

Sunflower Pie
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Adventure with OneOne.
A short story about a parasitic sunflower and her loyal son. Eat everything you can. Enjoy the sunshine. Do whatever it takes to make her happy. This is a prequel to Siren's Call: Escape Velocity.
- 7

Mayday Trials
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie with OneOne.
A short psychological thriller visual novel where you guide Sora through twisted interrogations, moral dilemmas, and unraveling memories...
- 8

The Ultimate Death Clock
Single-player alternative to OneOne — playable solo, no multiplayer required. Shares Indie and Casual with OneOne.
You find yourself in a singularity with Death itself. With few chances to speak with the living, Death proposes a little game. Do you dive deep within yourself to indulge this cosmic guide and find out when you will meet again on official business? The Ultimate Death Clock awaits!