Single-player games like O.C.D. - On Completeness & Dissonance
Below are 10 single-player Steam games similar to O.C.D. - On Completeness & Dissonance, 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 O.C.D. - On Completeness & Dissonance page.
Ranked picks
- 1

One Line: Letters and Codes
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
You have just received a coded love letter! In this minimalist puzzle, you will have to draw a single line to fill the entire board. At each level solved, get a code to reveal a piece of the letter. Gather the codes, read the letter and discover the message.
- 2

One Line
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
One Line is a minimalist puzzle game where the objective is to draw a single line filling the entire board. Different mechanics will challenge your mind in this game that is easy to learn but hard to solve. Can you find the correct path?
- 3

The Answer Is 42
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
The answer to life, the universe, and everything. Connect the numbers. Fill the board. You will find out.
- 4

A Path to Light
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
A solitary abstract journey. Discover the rules and guide your steps in the grid to touch the triangle(light). ♦
- 5

BlackJack Math Cross Numbers
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
Tease your brain in this ambient logic game where you have to make the math match 21 as a result horizontal and vertically (because we're talking about blackjack, right?) Swap the cards, make the math, repeat. That's all you'll need in order to complete this game!
- 6

Gambit Shifter
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
Gambit Shifter is a relaxing, minimalist cozy puzzle game for chess experts and beginners alike! Take control of a single piece, solve your way through 80+ hand-crafted levels and lose yourself in the zen atmosphere as you advance.
- 7

Aurora Hex - Pattern Puzzles
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie and Casual with O.C.D. - On Completeness & Dissonance.
Aurora Hex - Pattern Puzzles is a relaxing and peaceful puzzle game, where you link matching pieces together to discover beautiful hidden patterns.
- 8

Destroy The Hexons
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Casual with O.C.D. - On Completeness & Dissonance.
Destroy The Hexons is a math logic puzzle game with number cannons that destroy number hexagons. Find the right math combination to destroy all the hexes in the scene.
- 9

Thundering Skies
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie with O.C.D. - On Completeness & Dissonance.
A shoot'em up inspired by the 16-bit classics of the genre.
- 10

Out Of Memories
Single-player alternative to O.C.D. - On Completeness & Dissonance — playable solo, no multiplayer required. Shares Indie with O.C.D. - On Completeness & Dissonance.
A surreal nightmare by green phosphor and text graphics. But the outdated hardware isn't the only thing that's decaying: devoid of any memories, all you know is a toxin is destroying your body little by little - and it's only one of the things out to kill you. Get ready to die like it's 1981.