Single-player games like Eresys
Below are 12 single-player Steam games similar to Eresys, 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 Eresys page.
Ranked picks
- 1

PROPHECY OF THE NUN
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
The path of a group of friends falls on a mysterious mansion, and the extraordinary events that take place in the mansion are told.
- 2

Deborg Desolation Pre-Born
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
Deborg Desolation is a first-person indie game intended for the survival of mankind. Train to be a soldier capable of containing any injurious entity to achieve the survival of your own race, seek to plan strategies that allow your advancement without stopping.
- 3

Backrooms: The Last Observer
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Adventure with Eresys.
Backrooms: The Last Observer is a cooperative horror game. Descend into something that resists understanding, where perception itself begins to fracture. You are here not to fight, but to witness — and sometimes, witnessing is the worst thing you can do.
- 4

Backrooms: Forgotten Floors
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Adventure with Eresys.
Backrooms: Forgotten Floors is a cooperative horror game for 1–4 players. Descend into levels no one remembers, through spaces that shouldn't exist. You're here now — and the only thing worse than being lost is being noticed.
- 5

The Persistence
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
Survive aboard a doomed deep space colony starship, overrun with horrific and murderous aberrations. Explore, evade and fight your way through the depths to bring the ship back to Earth. Gather resources, upgrade abilities and fabricate an arsenal of weapons in this sci-fi horror roguelite.
- 6

Survive the Nights
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
Hardcore open-world survival where preparation is everything. Scavenge, craft, fortify during the day. When night falls, the infected hunt in numbers. Play solo or with friends in a brutal post-apocalyptic sandbox where survival is earned through smart decisions. How many Nights will you survive?
- 7

The Shore
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
THE SHORE is a first person story driven game with an atmospheric environment and narrations, You will encounter mysterious creatures and unravel the secrets behind them. Strong elements of horror, struggle to survive an unknown world that will make you question your own sanity.
- 8

Dying Light
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action with Eresys.
First-person action survival game set in a post-apocalyptic open world overrun by flesh-hungry zombies. Roam a city devastated by a mysterious virus epidemic. Scavenge for supplies, craft weapons, and face hordes of the infected.
- 9

Alien: Isolation
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action with Eresys.
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.
- 10

Lethal Company
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
A co-op horror about scavenging at abandoned moons to sell scrap to the Company.
- 11

Nightfall House
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Adventure with Eresys.
Nightfall House is a first-person walking simulator game that allows you to feel as if someone is always around.
- 12

The Shore VR
Single-player alternative to Eresys — playable solo, no multiplayer required. Shares Action and Adventure with Eresys.
The Shore VR is a first-person story-driven game with an atmospheric environment and narrations. You will play the role of a man who ends up on a mysterious island. Strong elements of Lovecraftian horror, struggle to survive in an unknown world.