Single-player games like The Spectrum Retreat
Below are 15 single-player Steam games similar to The Spectrum Retreat, 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 The Spectrum Retreat page.
Ranked picks
- 1
Doll Impostor
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Strategy and Indie with The Spectrum Retreat.
Doll Impostor is a horror game where 1-4 players take on the role of guardians of possessed dolls. Work together to identify the impostor doll before 9 a.m, or face dire consequences. Every hour counts in this tense, fear-filled race against time.
- 2
The Station
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
The Station is a first-person sci-fi mystery set on a space station sent to study a sentient alien civilization. Assuming the role of a recon specialist, players must unravel a mystery which will decide the fate of two civilizations.
- 3
MIND: Path to Thalamus Enhanced Edition
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Strategy and Indie with The Spectrum Retreat.
MIND: Path to Thalamus is a First Person Puzzler that throws you into a fantastic and surreal environment. You will bend the natural elements to your will in order to progress in this emotive, mindbending tale. Now also in Virtual Reality!
- 4
Among the Sleep - Enhanced Edition
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
Among the Sleep: Enhanced Edition is a new and improved version of the award winning first person horror adventure. In the game you play as a small child trapped in a weird nightmare where you go looking for your mom.
- 5
Conarium
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
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.
- 6
SOMA
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
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.
- 7
The Guest
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
'The Guest' is a gloomy adventure full of enigmas where the exploration of your surroundings comes to prominence; puzzles, secrets and riddles will help you discover who has locked you in this somber hotel room and most importantly, why.
- 8
ROUTINE
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
ROUTINE is a First Person Sci-Fi Horror set on an abandoned lunar base designed around an 80s vision of the future. Explore and investigate your surroundings as you survive against unknown threats.
- 9
The Talos Principle
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
The Talos Principle is a first-person puzzle game in the tradition of philosophical science fiction. Made by Croteam and written by Tom Jubert (FTL, The Swapper) and Jonas Kyratzes (The Sea Will Claim Everything).
- 10
The Witness
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
You wake up, alone, on a strange island full of puzzles that will challenge and surprise you.
- 11
The Turing Test
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Adventure with The Spectrum Retreat.
The Turing Test is a challenging first-person puzzle game set on Jupiter’s moon, Europa. You are Ava Turing, an engineer for the International Space Agency (ISA) sent to discover the cause behind the disappearance of the ground crew stationed there.
- 12
Superliminal
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Adventure with The Spectrum Retreat.
Perception is reality. In this mind-bending first-person puzzler, you escape a surreal dream world through solving impossible puzzles using the ambiguity of depth and perspective.
- 13
Portal
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required.
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
- 14
Q.U.B.E: Director's Cut
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
Q.U.B.E: Director's Cut is the definitive version of the brain-twisting first-person puzzler. Using special high-tech gloves to manipulate cubes in the environment, the player solves an array of conundrums - from physics-based challenges; to 3D jigsaws; to platform-based trials.
- 15
Q.U.B.E. 2
Single-player alternative to The Spectrum Retreat — playable solo, no multiplayer required. Shares Indie and Adventure with The Spectrum Retreat.
Q.U.B.E. 2 is the sequel to the hit first-person puzzle game Q.U.B.E. You are Amelia Cross, a stranded archaeologist who has awoken among the ruins of an ancient alien landscape. With the distant help of another survivor you must solve the puzzles of this mysterious world and find a way back home.