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

The Devil's Whisper
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Indie with Grey Block.
The Devil's Whisper is a psychological horror Visual Novel with a full voice cast. Immerse yourself in a haunting mystery filled with dark drama and a touch of romance. Multiple thrilling alternate endings to play through! Choose who lives and who dies!
- 2

Through The Fragmentation
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Indie and Adventure with Grey Block.
Atmospheric first person adventure game focusing on immersion and exploration. Meet strange characters, discover secrets and try to unfold the mystery of the Fragmentation.
- 3

SIMULACRA 3
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Indie with Grey Block.
The town of Stonecreek is haunted. People keep disappearing into thin air, leaving nothing but an eerie symbol behind. With the townsfolk gripped with fear, use a missing victim's phone to unlock the truth in the third entry of the acclaimed horror series, SIMULACRA.
- 4

Crimson Snow (2023)
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Action and Indie with Grey Block.
Christmas is a joyful time, but this time something dark is hiding behind the holiday decorations. Your actions will determine whether you and your girlfriend survive Christmas night.
- 5

Observer: System Redux
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Indie and Adventure with Grey Block.
A first‑person cyberpunk horror detective story set in a decaying, neon‑scarred future. As an Observer who invades minds to hunt for clues, you will sift through corrupted memories to track down a mysterious killer and confront your own dark past.
- 6

Karaski: What Goes Up...
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Action and Indie with Grey Block.
An immersive sim-lite in a fictional historical setting. You are on the world's first airship about to crash down and have to find the culprit. Sneak around, break into cabins, interrogate passengers, find evidence - but be careful not to incriminate yourself!
- 7

Clandestine
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Action and Indie with Grey Block.
Clandestine is a 2-player or singleplayer stealth/hacking game set in 1996. Asymmetrical co-op allows one player to take the role of the spy while a friend provides overwatch and assistance as the hacker, and unravel a post-Cold War espionage conspiracy.
- 8

s.p.l.i.t
Single-player alternative to Grey Block — playable solo, no multiplayer required. Shares Action and Indie with Grey Block.
A short psychological horror game, where you attempt to gain root access into an unethical superstructure.