Single-player games like Observation
Below are 16 single-player Steam games similar to Observation, 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 Observation page.
Ranked picks
- 1
Moons of Madness
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Adventure with Observation.
Moons of Madness is a first-person, story-driven cosmic horror game where the scientific exploration of Mars meets the supernatural dread of Lovecraft.
- 2
The Turing Test
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Adventure with Observation.
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.
- 3
Gray Dawn
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
Embark on a terrifying adventure of a priest accused of murdering an altar boy. Gray Dawn is a psychological thriller infused with religious elements and combines story-driven quests with an artistic experience.
- 4
Stories Untold
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
Stories Untold is a compilation tape of four experimental adventures, including a remaster of the original hit episode “The House Abandon”.
- 5
Transient: Extended Edition
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
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.
- 6
The Alien Cube
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
A cursed legacy awakens something ancient, revealing a terrifying reality never meant for human eyes. Follow your missing uncle’s trail, uncover forbidden secrets, and face a Lovecraftian cosmic horror in this first‑person adventure.
- 7
Satellite Odyssey: Prologue
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
Satellite Odyssey: Prologue is a short first-person story-driven adventure with horror elements. Immerse yourself in the atmosphere of classic science fiction and retro-futurism inspired by Soviet sci-fi films. Your partner is Zarya, the artificial intelligence.
- 8
Oxenfree
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
Oxenfree is a supernatural thriller about a group of friends who unwittingly open a ghostly rift. You are Alex, and you’ve just brought your new stepbrother Jonas to an overnight island party gone horribly wrong.
- 9
Tacoma
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
Tacoma is a sci-fi narrative adventure from the creators of Gone Home. Set aboard a high-tech space station in the year 2088, explore every detail of how the station’s crew lived and worked, finding the clues that add up to a gripping story of trust, fear, and resolve in the face of disaster.
- 10
SOMA
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
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.
- 11
Alien: Isolation
Single-player alternative to Observation — playable solo, no multiplayer required.
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.
- 12
Prey
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Adventure with Observation.
In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.
- 13
Return of the Obra Dinn
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
Lost at sea 1803 ~ The good ship Obra Dinn.
- 14
Solaris
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Adventure with Observation.
"Solaris" is a story about a journey in search of yourself. The hero fulfills the last will of a loved one, meeting many strange characters. The road is full of humor, but the further you go, the stronger the feeling becomes: beneath the cozy surface, something terrible is awakening.
- 15
CAT Interstellar
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
A short story inspired by Robert Heinlein's:The Moon Is a Harsh Mistress
- 16
Deliver Us The Moon
Single-player alternative to Observation — playable solo, no multiplayer required. Shares Indie and Adventure with Observation.
The Moon has gone dark, cutting off Earth’s last source of energy. As a lone astronaut, you’ll explore abandoned lunar bases, solve intricate puzzles, and navigate stunning zero-gravity environments. Operate advanced vehicles, uncover hidden truths, and survive in this gripping sci-fi thriller.