Single-player games like Project Fiend
Below are 8 single-player Steam games similar to Project Fiend, 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 Project Fiend page.
Ranked picks
- 1

The Roc
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Action and Indie with Project Fiend.
Venture into the dark realm of the legendary Roc, Run from cover to cover, Be wary of wild beasts and supernatural terrors and use your hand cannon if you have to, Find all ancient tablets and put an end to the Roc's Tyranny.
- 2

Rite of Osiris
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Action and Adventure with Project Fiend.
Something is hunting you in the dark. Descend into buried Egyptian tombs in a first-person psychological survival horror, where your only light is a dwindling candle and your only hope is whatever scraps you can scavenge and craft before it finds you.
- 3

Another World Series -Slit Mouth Woman VS AOONI-
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Action and Adventure with Project Fiend.
Legendary modern monsters vs. legendary horror games! This is a 3D horror action adventure game where you must escape from an abandoned hospital without being found by the Slit Mouth Woman who lives in another world and AOONI who lives in the real world.
- 4

The Hollow Line
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Action and Indie with Project Fiend.
Can you escape the tunnels? An AI-powered buddy is following you as you discover the seemingly never-ending network of tunnels. Get ready for a personalized and unique experience at The Hollow Line.
- 5

Horror inside the forest
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Action and Indie with Project Fiend.
Plunge into the captivating realm of "Horror Inside the Forest," an exhilarating game that tests your bravery. Explore a mysterious forest, confront supernatural forces, uncover secrets, survive the darkness, and escape its shadowy embrace in this immersive horror experience.
- 6

Amnesia: Rebirth
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Indie and Adventure with Project Fiend.
A first-person horror adventure. Uncover your past and survive the Algerian desert. Fear is your enemy; stay calm to not succumb to an illness threatening you and your loved one. Avoid darkness, hide from monsters and solve puzzles. Adventure Mode available for a less scary experience.
- 7

Portens
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Adventure with Project Fiend.
Portens is a first-person survival horror game based on the urban legends of Buenos Aires. Set at Pasco 2100, an abandoned Line A subway station. Explore its corridors, manage your resources to survive, solve the mysteries it hides, and escape the threats lurking inside.
- 8

Umbra
Single-player alternative to Project Fiend — playable solo, no multiplayer required. Shares Action and Indie with Project Fiend.
Being hopeless is the feeling you will encounter when you see the dreadful horrors that you will have to face in Umbra, an abyss where the worst horrors that a human can imagine reside, do you dare to face them?