Single-player games like Protocol Five
Below are 13 single-player Steam games similar to Protocol Five, 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 Protocol Five page.
Ranked picks
- 1
The Keyless: Awakening
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
The Keyless: Awakening is a journey through a dreamlike and surreal world, witnessing bizarre, metaphorical and surreal scenes as you overcome simple challenges.
- 2
Barbotine
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
An atmospheric horror micro-game that touches on topics of anxiety, isolation, body image and obsessive habits with a surreal PSX aesthetic.
- 3
The Secret Story
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
What begins as a quiet night in an old hotel soon turns into a desperate fight for survival. As midnight approaches, Serena must uncover the truth, face her fears, and decide which path to take.
- 4
This Is Not Your House
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Indie and Adventure with Protocol Five.
Crush someone's skull, Suffer from Hypothermia, Transcend your Mortal Frame, Find all 10 Endings. GET YOUR HOUSE BACK.
- 5
A Short Tale of Solitude
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Adventure with Protocol Five.
A Short Tale of Solitude is an adventure horror game, combining exploration, puzzles and survival where the gameplay is focused on fear mechanics.
- 6
My Dear Neighbor, edition 404
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Adventure with Protocol Five.
My Dear Neighbor, edition 404 is a survival horror game that tells the story of your neighbor. Go to your neighbor's house and end up in a glitchy nightmare. Fight your way out of this glitched nightmare amid bugs and nightmarish visions in this psychological horror game.
- 7
Allophobia
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
17 Horror rooms simulating common phobias. Are you afraid of spiders, cockroaches, snakes, heights, fire, being buried alive? Enter the black doors and conquer your fears!
- 8
Acceptance
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
A story-driven psychological thriller about the horrific consequences of a loved one's suicide.
- 9
The Voyager
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
Journey between parallel worlds in a first-person narrative adventure, where each journey reveals an increasingly disturbing threat. Survive, explore, and discover what lies beyond the portal.
- 10
Kill The Topulus
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
Kill The Topulus, shoot with timing and skill to survive! Complete unique challenges, climb the global leaderboards and prove you are the Master of Topulus!
- 11
Edd Skeleton Game
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
Survive Edd Skeleton's "amazing" game, Mock his efforts, and watch him up the ante with scarier creatures, trickier puzzles, and surprises that will keep you on edge. Can you endure his trials and become friends... or will you just keep mocking his incompetence?
- 12
The Keyless: Beyond the Door
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
“The Keyless: Beyond the Door” is a linear, dreamlike, and surreal first-person journey. You are trapped in an infinite, ever-changing world, as you search for meaning or a way out that may not exist.
- 13
Edd Skeleton VR
Single-player alternative to Protocol Five — playable solo, no multiplayer required. Shares Action and Indie with Protocol Five.
You told Edd Skeleton that his game was a lot of fun and not boring at all, and that it was really scary... that you would never want to stop playing it and that it was the best game of all time... here's another one for VR!