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

Muse
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie and Casual with Project Subtrahend.
A psychological visual novel where struggling artist Clara explores surreal dreams through reality-warping painting minigames. Solve abstract puzzles, make story-altering choices, and uncover dark truths across multiple endings. Will her art bring salvation... or unravel into madness?
- 2

Hanako's Flower Shop
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie and Casual with Project Subtrahend.
Hanako’s Flower Shop is a heartfelt visual novel where you run a flower shop, crafting bouquets using the language of flowers. Listen to customers’ stories, shape Hanako’s journey through choices, and navigate her struggle to honor her grandpa’s legacy while discovering her own path.
- 3

Dimensions of Mind
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie and Casual with Project Subtrahend.
Enter to the characters mind and make decisions. The game is played like interactive movie/adventure game with morality choices which influence the outcome which can be: a manipulative, balanced or violent. The game is based on psychology/philosophy and teaches about thoughts and their consequences.
- 4

Always The Same Blue Sky...
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie and Casual with Project Subtrahend.
A gripping seaside adventure following the connection of two young souls, each unknowingly helping the other make sense of a world that seems senseless. Complemented by breathtaking artwork and an addictive soundtrack, this charming tale will definitely suck you in and leave a lasting impression!
- 5

VOICE
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie with Project Subtrahend.
VOICE is a game about the story of living in a dystopian world where speaking is forbidden.
- 6

2ECONDS TO STΔRLIVHT: My Heart's Reflection
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie and Casual with Project Subtrahend.
"The day I put that uniform on, I saw myself in the mirror for the first time. And I dared to think, maybe, just maybe..." A free VN about standing up to the world to be yourself. Part of the NOISZ series, and prequel to NOISZ STΔRLIVHT.
- 7

Truer than You
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Indie with Project Subtrahend.
Overcome your past and become someone new in Truer than You. A choice-driven narrative adventure about love, loss and being lost in life. You're hired as a gig-working actor to play roles in real-life situations. Have conversations, get a good rating and follow the rules. All good?
- 8

The Journey - Episode 1: Whatever This Is
Single-player alternative to Project Subtrahend — playable solo, no multiplayer required. Shares Casual with Project Subtrahend.
The first step that you never knew you needed to take to get to wherever you're wanting to go...