Single-player games like SUBJECT 404
Below are 8 single-player Steam games similar to SUBJECT 404, 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 SUBJECT 404 page.
Ranked picks
- 1
Dark Dice: Cthulhu Investigation Log
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
A dice-driven Cthulhu Mythos investigation log where every roll can cost you your sanity, your team, or your life — and there is no undo.
- 2
Spectral Sonata
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
A first person psychological horror game. Explore an ever-changing mansion in a slow-paced, atmospheric experience that combines hauntingly beautiful melodies with a suffocating environment. Uncover the tragic past, escape or confront the spirit.
- 3
Tear Factory
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
A game about hunting rats, feeding them to your family, and going to bed.
- 4
Mindstray
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
Mindstray is a first-person psychological horror investigation game where players explore unsettling environments, observe subtle details, and piece together fragmented clues to uncover the truth behind distorted memories and unexplained events.
- 5
Guadeloupe : The Secret of the Three Rivers
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
A trail of ash threatens Guadeloupe. Papa D'lo, the water spirit, has dried up the rivers to unleash a cataclysm. Using a controller or powered by the EVEIA smart pedal device, follow the source to the summit of La Soufrière to purify the island and break the curse!
- 6
Fourth Time Around
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
Henry is an elderly man with regrets. Over the course of his life, he has killed three times. He is about to kill again. Survive a home invasion as you recount his life through a series of dreamy vignettes featuring a thief, a friend, a lover, and mysterious bartender.
- 7
Not Yet
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Adventure with SUBJECT 404.
NOT YET is a first-person psychological horror experience where silence grows heavier the deeper you go, and hesitation becomes its own consequence.
- 8
Room 337
Single-player alternative to SUBJECT 404 — playable solo, no multiplayer required. Shares Indie and Adventure with SUBJECT 404.
You are a father. You wake in a hallway that hums. Empty pools. Dead malls. Your four daughters are here. Voice acted by a real father and his daughters. Two endings. No right answer.