Single-player games like Doorways: Old Prototype
Below are 13 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
Horizon's Mirage
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Horizon's Mirage is an atmospheric first-person platformer set in a deserted cityscape where all kinds of anomalies and dangers await. Explore and search for ability points to unlock powers like slow motion, jetpack, air dash and more.
- 2
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.
- 3
Toy Voyage
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Begin an adventure in the world of humans! This is the story of you, a toy bear, escaping from your room and begin an adventure to find your new owner. Climb on chairs, cross over beds, run through the human world, and overcome various obstacles to reach your destination.
- 4
Mr. Scientist
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Mr. Scientist is a single player horror game. You are a hostage of a mad scientist and now you need to escape from his house.
- 5
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.
- 6
Valley
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Explore the vast and beautiful world of Valley using the power of the L.E.A.F. suit: a fierce exoskeleton that grants exceptional speed and agility along with the phenomenal ability to manipulate the life and death of all living things.
- 7
The Alpha Device
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Action and Indie with Doorways: Old Prototype.
Beyond space, beyond reason... beyond humanity. Discover a gripping tale of a dystopian future narrated by David Hewlett, star of the Academy Award-winning The Shape Of Water.
- 8
The Crow's Eye
Single-player alternative to Doorways: Old Prototype — playable solo, no multiplayer required. Shares Indie and Adventure with Doorways: Old Prototype.
In an abandoned medical university, test your intellectual might as you unravel a 20-year-old mystery in this depraved first-person puzzle adventure, doing what it takes to escape your fate as a macabre scientist's human experiment. The ends justify the means in The Crow’s Eye.
- 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: 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.
- 11
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.
- 12
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.
- 13
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!