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

Spectral Sonata
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Action and Indie with In Tenebris.
A first person psychological horror game. Explore an ever-changing mansion in a slow-paced, atmospheric experience that combines hauntingly beautiful melodies with a suffocating environment. Uncover the tragic past, escape or confront the spirit.
- 2

EMOTIONLESS : The Last Ticket
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Adventure with In Tenebris.
Step into a liminal, cosmic horror experience set in an abandoned amusement park. Uncover the haunting narrative behind its twisted rides and empty tunnels to discover what lurks within a reality that shouldn't exist…
- 3

SOMA
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Action and Indie with In Tenebris.
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

Conarium
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.
Conarium is a chilling Lovecraftian game, which follows a gripping story involving four scientists and their endeavor to challenge what we normally consider to be the ‘absolute’ limits of nature. Inspired by H.P. Lovecraft’s novella "At the Mountains of Madness", but largely set after the original story.
- 5

Moons of Madness
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Adventure with In Tenebris.
Moons of Madness is a first-person, story-driven cosmic horror game where the scientific exploration of Mars meets the supernatural dread of Lovecraft.
- 6

Still Wakes the Deep
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Action and Indie with In Tenebris.
1975. Disaster strikes the Beira D oil rig off the coast of Scotland. Navigate the collapsing rig to save your crew from an otherworldly horror on the edge of all logic and reality in this 3x BAFTA Games Award-winning narrative horror experience.
- 7

Transient: Extended Edition
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.
H.P. Lovecraft meets Cyberpunk. Delve deep into a dystopian world and investigate what is happening to you and your friends in a domed city. Solve puzzles, hack systems and plug in to explore other dimensions. Discover a truth that might tear apart your sanity and question your very existence.
- 8

Scarlet Hollow
Single-player alternative to In Tenebris — playable solo, no multiplayer required. Shares Indie and Adventure with In Tenebris.
Your aunt’s dead, your cousin hates you, and you’re stuck in the dead-end town of Scarlet Hollow. Choose your path through a branching narrative so dense that you'll see less than 1/5 of the game on a single playthrough. You won't be able to save everyone. Good luck, and welcome home.