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
Victim Complex: Part 1
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Action and Indie 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.
- 2
Before the Silence Claims: In Absentia
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required.
You don't fight. You interfere. Survive an impossible city by using sound frequencies to traverse memory, guilt, and absence.
- 3
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.
- 4
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..."
- 5
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?
- 6
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.
- 7
Supernormal
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Action and Indie with Protocol Non-Human.
Inspired by Allison Road. SUPERNORMAL is a psychological horror game set in a seemingly ordinary apartment harboring dark secrets. Play as Detective Wyatt, tasked with unravelling the disappearance of Masato Sakamoto's daughter. Search for clues and unravel the sinister truth.
- 8
The Infectious Madness of Doctor Dekker
Single-player alternative to Protocol Non-Human — playable solo, no multiplayer required. Shares Indie and Simulation with Protocol Non-Human.
YOU are a psychiatrist, trying to solve a murder whilst treating the unusual patients of the recently deceased Doctor Dekker. Type a question - patients reply in full screen video and have questions for you too but be careful what you say. Your words determine their eventual fates, and your own!