Single-player games like Euclidean
Below are 18 single-player Steam games similar to Euclidean, 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 Euclidean page.
Ranked picks
- 1

Narcosis
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
Survival, horror at the sunless depths of the Pacific Ocean: Stranded on the seafloor with low light and few tools, an industrial diver takes desperate steps to surface before his oxygen — and sanity — give out.
- 2

MIND: Path to Thalamus Enhanced Edition
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
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!
- 3

The Solus Project
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
The Solus Project is a single player exploration adventure with survival elements. The adventure is set on a mysterious planet and is the spiritual successor to The Ball - 2010 PC Gamer Action/Adventure Game Of The Year...
- 4

The Obsessive Shadow
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
The Obsessive Shadow is a Survival Horror Game about a stalker you can't exactly Identify. With nothing but your eyes and a flashlight at your disposal, it's up to you to survive whatever horrific person or thing is out there watching you...
- 5

Albino Lullaby: Episode 1
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
Albino Lullaby is a horror adventure game that doesn't rely on jump scares or gore. Escape from a surreal psychological nightmare as the world dynamically twists and contorts around you.
- 6

Neverout
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
Neverout is a 'Escape Room' game with quantum physic and reality bending. Packed with dozens of levels, difficult puzzles, eerie atmosphere and unreal immersion. Every action creates reaction. Nothing is certain, but one thing is known - every lock has a key. And in Neverout, the key - is YOU.
- 7

Scanner Sombre
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
Scanner Sombre is a 3d horror cave exploration game where darkness is your greatest foe. Illuminate the unseen with your LIDAR scanner, revealing the eerie beauty and peril of the abyss. From the creators of Prison Architect, this immersive adventure uses light and shadow for a haunting experience.
- 8

Crystal Rift
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
A grid-based dungeon-crawler, in classic first person perspective.An experiential horror challenge game that takes the player through a series of increasingly mysterious locations. Comes with Full Dungeon Editor. Designed with full Virtual Reality support for the HTC Vive and Oculus Rift.
- 9

Outer Wilds
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action with Euclidean.
Named Game of the Year 2019 by Giant Bomb, Polygon, Eurogamer, and The Guardian, Outer Wilds is a critically-acclaimed and award-winning open world mystery about a solar system trapped in an endless time loop.
- 10

The Elder Scrolls V: Skyrim
Single-player alternative to Euclidean — playable solo, no multiplayer required.
EPIC FANTASY REBORN The next chapter in the highly anticipated Elder Scrolls saga arrives from the makers of the 2006 and 2008 Games of the Year, Bethesda Game Studios. Skyrim reimagines and revolutionizes the open-world fantasy epic, bringing to life a complete virtual world open for you to explore any way you choose.
- 11

Call of Cthulhu: The Wasted Land
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
Call of Cthulhu: The Wasted Land is a turn-based strategy/role-playing game based on the award winning Call of Cthulhu RPG. Set in the midst of World War One, the game pits your team of investigators and soldiers against an ancient enemy, one older than humanity itself...
- 12

NaissanceE
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
NaissanceE is an obscure and magical first person exploration game, a philosophical trip and an artistic experience. The adventure takes place in a primitive mysterious structure and the game mainly consists to explore and feel the deep and strong ambiance of this atemporal world.
- 13

Remnants of R'lyeh
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
Inspired by H.P. Lovecraft's Great Work. An ancient dark power is calling you and you need to find an exit. Face your greatest fear, fight, hide... you must escape before the underwater city rises...
- 14

Warhammer 40,000: Space Marine 2
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action with Euclidean.
Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes.
- 15

AaAaAA!!! - A Reckless Disregard for Gravity
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
BASE jump through a floating city, creating your own stunts to delight your fans. Use quick reflexes to negotiate the intricate tangle of girders that make up the floating city. Flip protesters off for points!
- 16

Yog-Sothoth’s Yard
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
Manage a hotel and hire employees including Death, a dragon, a Spirit Hunter, and a bioroid maid. Build your wealth through various means and refine your strategies based on the predictions of Oracles. All employees can be romanced depending on your choices.
- 17

Felt Tip Circus
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Action and Indie with Euclidean.
Welcome to the smallest show on Earth! The lights are bright. The tension, real. The audience, demanding, even if they are made of wood. Now it’s your turn to compete in the greatest contest of skill ever to grace the miniature world of toys, trinkets and plain old junk!
- 18

Terminal ESC
Single-player alternative to Euclidean — playable solo, no multiplayer required. Shares Indie with Euclidean.
NO DOCS. NO TUTORIAL. NO ESCAPE. Tackle an evolving spectrum of puzzles within a simulated computer system using only terminal commands. Inspired by a bad day with a package manager.