Single-player games like Inside Depth 6
Below are 16 single-player Steam games similar to Inside Depth 6, 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 Inside Depth 6 page.
Ranked picks
- 1

Within Skerry
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
The Accumulation of Evil is an ancient book stating that if enough evil energy is concentrated in a single area, a dark force may be born.Humans can sometimes be very horrible creatures - but sometimes, it is taken a bit too far.
- 2

Dead Take
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie and Adventure with Inside Depth 6.
Find your missing friend. Uncover the secrets within. Brave a luxurious and haunting mansion in Dead Take, a first-person psychological horror crafted by Surgent Studios.
- 3

SOMA
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 4

Is Simon There?
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie and Adventure with Inside Depth 6.
A few months have passed since the death of my son, Simon. Ever since that tragic day, I find myself falling into the darkest emotions I could ever imagine. I am haunted everyday with what I have done; But sometimes, I am haunted by more than just my emotions...
- 5

Suite 776
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
A pure terror with a twisted backstory; jumping straight into the horrors surrounding Suite 776.
- 6

Hollow Cocoon
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie and Adventure with Inside Depth 6.
"Trapped in a cocoon, the silkworm weaves her final dream." Hollow Cocoon is a first-person horror adventure game set in 1980s Japan. Immerse yourself in meticulously recreated environments as you venture into the depths of unspeakable horrors that await you.
- 7

THRESHOLD
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie and Adventure with Inside Depth 6.
In a lonely station atop a mountain, a train rumbles its precious cargo to places unknown. Now is your shift. Keep the pace. Uncover a mystery. Fight for your last breath. The air is thin up here.
- 8

Static Dread: The Lighthouse
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
Lovecraft meets Papers, Please. Play as a lighthouse keeper and guide ships safely into the harbor using your radio. Survive the presence of something impossible, and don’t let the shadows consume you!
- 9

Minds Eyes
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
You venture through your mind, trying desperately to wake up from your nightmares. Will you make it out?
- 10

A Girls Fabric Face
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie and Adventure with Inside Depth 6.
A brutal murder has taken place. To that, you find yourself investigating what has happened through cameras set up in the house. Upon investigating you find yourself determining that not everything is as it seems. In the end, you are faced with an important decision to truly understand what happened to the girls with the fabric face.
- 11

SILENT HILL 2
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Adventure with Inside Depth 6.
Investigating a letter from his late wife, James returns to where they made so many memories - Silent Hill. What he finds is a ghost town, prowled by disturbing monsters and cloaked in deep fog. Confront the monsters, solve puzzles, and search for traces of your wife in this remake of SILENT HILL 2.
- 12

Snafu
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
Alibaba, the caretaker of the Medieval Grow your Business Game notices a Glitch or Virus of some sort called Snafu has infiltrated the game files. NPCs begin to act strangely, textures look off, and I think - I think something is trying to hunt me down?
- 13

THE DESCENT
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie with Inside Depth 6.
The Descent, a horror walking sim in Rockwell Mine, immerses players in miners' harsh life and unsettling mine encounters. Play as an investigator uncovering a hometown mystery.
- 14

Outlast
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.
- 15

Money Maker
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Action and Indie with Inside Depth 6.
Stuck in a simulation with only two hours to complete the game. Failure will result in the exit closing forever...
- 16

Night at the Office
Single-player alternative to Inside Depth 6 — playable solo, no multiplayer required. Shares Indie with Inside Depth 6.
You work late at the office not long after the death of a colleague. Throughout the night, all sorts of phenomenon begin to terrorize you, slowly uncovering the death of a fellow colleague. Who killed Joseph Anadam and why must you go through this trial to find out?