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

Omega Warp
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
Omega Warp is a sci-fi themed action-adventure, which takes place aboard an interstellar freighter. Explore, upgrade your skills and equipment, and uncover the mysteries surrounding the freighter's loss of communication with the base of operations on Earth.
- 2

21号空间站
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
What traps us is not time, but our faith in it.
- 3

Last Moor
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
Last Moor is a horror game in which a man wakes up and escapes from a secret laboratory on the moon. You have to escape by solving various puzzles, exploring the laboratory, avoiding or fighting the monsters there.
- 4

SpaceLift
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
Wake up as an engineer on a failing space elevator in this narrative-driven side-view 3D sci-fi adventure. Explore spacecraft and service decks, repair broken systems, solve light puzzles, and uncover what happened to the missing crew.
- 5

Mayak
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
A signal from a star // 3571 → 3559 → 3557 → … → 0 // 336 years remain // You and her, staring up at the sky. A hand-drawn sci-fi visual novel about first contact.
- 6

The Aurora Chronicles
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
A crew of four. Mysteries at the edge of known space. A utopia that might be more fragile than it appears. The Aurora Chronicles is an episodic sci-fi visual novel where your choices shape relationships, uncover buried secrets, and test whether hope can survive what you discover.
- 7

Locus Equation
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
You are an anthropod, a synthetically crafted life form. Your objective is to save the ones who are stuck on an uninhabited planet. Persuade, charm, manipulate: use your ultimate power—freedom of choice—in sci-fi role playing hyper variative game LOCUS EQUATION.
- 8

Merman Jump King
Single-player alternative to NoOneKnowsME. — playable solo, no multiplayer required. Shares Adventure with NoOneKnowsME..
This is a high-difficulty platformer game where even slight collisions will cause you to lose control and be knocked back. I believe very few players can clear the game. Players will play as a mermaid warrior jumping forward to save the polluted ocean.