Single-player games like Gray Matter
Below are 9 single-player Steam games similar to Gray Matter, 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 Gray Matter page.
Ranked picks
- 1

Syberia
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure and Casual with Gray Matter.
Join Kate Walker as she travels to remote locations and time periods in this timeless voyage to discover her true destiny.
- 2

The Testament of Sherlock Holmes
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
Become the greatest detective of all time in The Testament of Sherlock Holmes, a twisting, turning investigation game set in a faithfully-reproduced London of 1898. As Sherlock Holmes, you must find clues, interrogate suspects and unveil a mystery in a story full of twists!
- 3

Still Life
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
Still Life 2 also now available!
- 4

Black Mirror III
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
Help Darren continue his search to uncover his clouded past. What do his torturous nightmares really mean? Who is the mysterious person that posted the bail to set him free? What demons lie waiting in the crypt?
- 5

Black Mirror II
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
Enter a dark, captivating world as the massive evil of Black Mirror Castle is reincarnated with over 100 atmospheric locations to explore and 40 different characters to interact with. Will Darren's search lead him to redemption or the hell of insanity?
- 6

Resonance
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
When a brilliant particle physicist dies unexpectedly, the race is on to secure his terrible new technology before it falls into the wrong hands. The lives of four playable characters become entangled as they fight against the clock to find the dead scientist’s secret vault.
- 7

Mystic Academy: Escape Room
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
Today is the day of your final exam to become a wizard. Within this enchanting escape room, you'll navigate a wizardry school, unravel puzzles, master new spells, and put your magical skills to the ultimate test. Will you emerge triumphant?
- 8

Agent A: A puzzle in disguise
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
A suave secret agent adventure game. Your mission (should you choose to accept) is to infiltrate enemy spy Ruby La Rouge’s secret hideaway and put a stop to her evil plans!
- 9

The Longest Journey
Single-player alternative to Gray Matter — playable solo, no multiplayer required. Shares Adventure with Gray Matter.
The Longest Journey is an amazing graphical adventure, where the player controls the protagonist, April Ryan, on her journey between parallel universes.