Single-player games like SYNESTHESIA
Below are 16 single-player Steam games similar to SYNESTHESIA, 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 SYNESTHESIA page.
Ranked picks
- 1

CITADEL
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
Awake from your slumber and venture out to the mighty CITADEL.
- 2

Press Any Button
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Casual with SYNESTHESIA.
This video game realized how boring it had been and now is trying its best to fix that.
- 3

The Test: Secrets of the Soul
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
You will answer a series of questions that will reveal things from deep within. Some will be uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and are you SURE you want the answers you seek? For it is time to unlock "Secrets of the Soul..."
- 4

Until Then
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
A fateful meeting sets off a chain reaction, upending Mark's life. People disappear and memories prove unreliable. Uncover a hidden truth with Mark and his friends in this narrative adventure and race to unravel the mystery before it's too late.
- 5

My Summer Adventure: Memories of Another Life
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
A strange incident turns the life of an ordinary young man upside down when, having fallen asleep on a regular train commute, he wakes up in another country... in a body of a Japanese student! An unforgettable summer adventure awaits, promising many fateful meetings and momentous occasions.
- 6

Himawari - The Sunflower -
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
After jointly founding the so-called Space Club, Youichi and his friend Amamiya Ginga, the son of Amamiya Daigo, spent their school days building a rocket -- until one fateful night, a mysterious young girl called Aries crash-lands near them, her memories also lost from the shock of the landing.
- 7

Decade
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
Control history in Decade - a groundbreaking indie adventure. Explore an alternate past. Discover how its ideas develop, distort, and disappear. Seed new movements, destroy others. Subvert the rise and fall of empires, art, ideologies, and individuals in this experimental narrative game.
- 8

BURIED STARS
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure and Casual with SYNESTHESIA.
A mystery adventure set at the collapse site of a live survival audition show. Trapped contestants communicate with each other—and the outside world through social media—as they wait for rescue. But as unexpected events unfold, trust begins to crack, and survival becomes far more complicated.
- 9

The VII Enigma
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
Fate, love, death... Can the enigma be solved? 『The VII Enigma』is a character-driven sci-fi mystery visual novel. Set in a shadowy world of dystopian conspiracy, you must defy the fabric of reality, navigating the desperate path to the 'true end' against the tyranny of time itself.
- 10

STEINS;GATE
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
Developed by 5pb. and Nitroplus, STEINS;GATE was awarded Famitsu magazine's coveted annual Game of Excellence award and was voted one of the most emotionally charged “tear-inducing games” ever made, in a Famitsu poll. It is a gripping and moving Visual Novel, which has already spawned manga and anime adaptations.
- 11

Zero Escape: The Nonary Games
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
Kidnapped and taken to an unfamiliar location, nine people find themselves forced to participate in a diabolical Nonary Game by an enigmatic mastermind called Zero. Why were they there? Why were they chosen to put their lives on the line? And more importantly, who can be trusted?
- 12

AI: The Somnium Files
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
Play as detective Kaname Date on the case of an elusive serial killer in this thrilling, sci-fi murder mystery.
- 13

Escape Floor Zero
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
Trapped in an infinite parking lot, your only escape is through Floor Zero. Detect subtle anomalies and make crucial decisions in this mind-bending, psychological horror experience. Dare to escape the unescapable? If you see an anomaly... turn back.
- 14

Double
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
Double is an action-quest game telling about a fight with a mental disorder by immersing in dreams. Choose your way and find out how this mystical story ends.
- 15

Root Double -Before Crime * After Days- Xtend Edition
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Adventure with SYNESTHESIA.
Rescue squad captain Watase Kasasagi wakes up without his memories in the middle of his most critical mission yet-- a nuclear meltdown at a research facility. In an unfamiliar place and without his years of training, he must rescue the survivors and escape...
- 16

Advent: Dawn
Single-player alternative to SYNESTHESIA — playable solo, no multiplayer required. Shares Indie and Adventure with SYNESTHESIA.
Seven strangers. One collapsed cave. No escape. A sci-fi mystery visual novel where every route toward survival draws you closer to a different companion—and a different lie.