Single-player games like Protocol Non-Human
Below are 8 single-player Steam games similar to Protocol Non-Human, 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 Non-Human page.
Ranked picks
- 1
Volcano Oden
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie with Protocol Non-Human.
A SAVE-EVERYONE type game where, just like a 911 operator, you make decisions based on the layout of the map or even based on past decisions. The deep psychological-horror story can only be uncovered by helping everyone. Should you save them all, the truth will finally come out...
- 2
Distant
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie with Protocol Non-Human.
A mysterious object brings a former detective to a distant place in the middle of nowhere, where the worst nightmares clash with reality. Are you prepared to face your fears in what might be your last investigation?
- 3
Before the Silence Claims: In Absentia
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required.
Explore a city shaped by fragmented memories—relying solely on an old experimental radio to bend reality, repel entities, and fulfill an impossible promise. A psychological first-person survival horror with multiple endings.
- 4
Victim Complex: Part 1
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie and Simulation with Protocol Non-Human.
Use your wits and iconic ghost hunting equipment to uncover the mystery of what happened to the residents of an abandoned apartment complex in this narrative-driven horror experience.
- 5
System Says Normal
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie with Protocol Non-Human.
You were hired to watch. Not to ask questions. Night shift. Corporate building. Cameras, reports, anomalies. Your predecessor left no final report. Now you're going to find out why. Please proceed.
- 6
The Test: Secrets of the Soul
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie and Simulation with Protocol Non-Human.
You will answer a series of questions that will reveal things from deep within. Some will be uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and are you SURE you want the answers you seek? For it is time to unlock "Secrets of the Soul..."
- 7
The Test: Hypothesis Rising
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie and Simulation with Protocol Non-Human.
The second chapter in The Test trilogy. Answer a series of in-depth questions to reveal hidden truths about yourself and unlock secrets to discover how your life can change drastically with just a few, slight modifications. ...But are you sure you want the answers you seek?
- 8
Baisu
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie with Protocol Non-Human.
Step into the shoes of Detective Clay Kriest in "Baisu," a chilling tale of family, art, and the haunting unknown. As you arrive at the secluded residence of Maple Street 22, responding to an eerie call for help, you'll find yourself immersed in a quest shrouded in darkness.