Single-player games like Astrumis - Survive Together
Below are 8 single-player Steam games similar to Astrumis - Survive Together, 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 Astrumis - Survive Together page.
Ranked picks
- 1

NULLHOME
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
NULLHOME is a first-person psychological horror experience inspired by liminal spaces and the Backrooms. Investigate mysterious TV-related disappearances, explore unsettling environments, solve puzzles, and survive encounters with unknown entities.
- 2

Forsaken Facilities
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
A 1-4 player coop horror experience. Find your way through everchanging environments to gather precious treasures for your kidnappers. The more you gather the longer you will survive.
- 3

It Hears You: Together
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
It Hears You - a co-op horror. Escape the forest as fast as you can. Play with 1 to 6 people. Move quietly and avoid unnecessary sounds so Stag doesn’t hear you. He’s blind, but his hearing is perfect.
- 4

Ominous
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
Ominous is a thriller/horror game for up to 4 players. In this game, you must collaborate with your teammates to face a creature within an indoor setting. What sets Ominous apart is its unique approach to multiplayer, offering a distinct experience compared to many other horror games available.
- 5

Aragami 2
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
Aragami 2 is a third person stealth game where you play as an assassin with the power to control the shadows. Join the shadow clan and fight the invader armies to protect your people.
- 6

The Outlast Trials
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?
- 7

Horror Loop
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
Horror Loop, made with a new generation game engine with a deep, impressive and original story, is waiting for you!
- 8

Storebound
Single-player alternative to Astrumis - Survive Together — playable solo, no multiplayer required. Shares Action and Indie with Astrumis - Survive Together.
A 1-3 player co-op puzzle horror game set in an accursed megastore. Work together to decode the store's twisted logic, and find a way out before the lurking horrors doom you to shop forever.