Single-player games like Doorways: Old Prototype
Below are 12 single-player Steam games similar to Doorways: Old Prototype, 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 Doorways: Old Prototype page.
Ranked picks
- 1

Port of Call
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Indie and Adventure with Doorways: Old Prototype.
Imagine waking up on a small dock with no recollection of who you are or how you got there. The first person you find is a grumpy, old man who enlists you to work on his ferry boat which seems to have materialized behind you.
- 2

Doorways: Holy Mountains of Flesh
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Doorways: Holy Mountains of Flesh is an Immersive Horror Adventure, featuring a Complex Story and Deep Atmosphere.
- 3

Lorn's Lure
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
An android is led through a vast structure by a glitch in his visual system. Lorn's Lure is an atmospheric narrative first-person platformer with novel climb-anything mechanics and modernized retro 3D graphics.
- 4

Doorways: Prelude
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Doorways is an immersive horror adventure, featuring a complex story and deep atmosphere.
- 5

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

Paratopic
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Indie and Adventure with Doorways: Old Prototype.
Smuggle contraband VHS tapes across the border. Discover the remnants of illicit industry. Prepare for an assassination. This is Paratopic, an atmospheric retro-3D horror adventure through a cursed fever dream.
- 7

Trapped
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Indie and Adventure with Doorways: Old Prototype.
You come to your senses in this place, you do not understand what is happening, but you know that it is better to get out of here as soon as possible
- 8

The Cursed Tape
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Indie and Adventure with Doorways: Old Prototype.
Someone slipped a mysterious videotape under your door... Do you dare watch it?!
- 9

Hellbound
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Classic First Person Shooter style game. Like the good old days. An action game focused on speed, gore, guns, and metal music. Inspired by the 90s’ classics with modern visuals and audio!
- 10

Doorways: The Underworld
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Doorways: The Underworld is an immersive horror adventure, featuring a complex story and deep atmosphere.
- 11

Hellbound: Survival Mode
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
FULL GAME NOW AVAILABLE. GO GET IT! This is the Free Survival Mode for Hellbound: a '90s style First Person Shooter, made 30 years later… but just a glimpse of the full game, go check it out!
- 12

Tenebris Somnia
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Indie and Adventure with Doorways: Old Prototype.
Tenebris Somnia is a 2D retro survival horror adventure game with live action cutscenes created by an award winning film crew from Argentina. Unveil the depths of a disturbing story by solving puzzles and fighting horrible creatures. ...What if they aren't just nightmares?