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

Emissary One
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
Co-op horror (1—4+ players). You’re being sent to another site to assist a squad. But it seems something is going to go wrong. Will you be able to make it back alive this time?
- 2

Escape the Backrooms
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie with Emissary Zero.
Escape the Backrooms is a 1-4 player co-op horror exploration game. Traverse 30+ eerie backrooms levels while avoiding entities and other dangers. Try to escape but be warned: survival isn't guaranteed.
- 3

INROOMS
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
A cooperative psychological horror experience up to four players where you and your friends must survive the deepest, most distorted liminal spaces of the Inrooms, the deepest levels of the Backrooms.
- 4

FOREWARNED
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
FOREWARNED is a 1-4 player co-op survival horror. Delve deep into ancient Egyptian ruins with your team of fellow archaeologists. Investigate phenomena, collect treasure, discover lore, survive danger, and banish the evil that lurks within.
- 5

I'm on Observation Duty 3
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
A thrilling psychological horror game. Your job is to look for anomalies in a haunted house. If you see anyhting suspicious (furniture moving, extra objects, intruders), take a photo and send a report. Includes both VR- (windows only) and non-VR (windows, mac, linux)-versions.
- 6

Escape First 2
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
"Escape First 2" is the second installment of a multiplayer escape room puzzle game for virtual reality or desktop PC! It includes 3 different escape rooms to choose from and can be played competitively, co-op or solo.
- 7

DEVOUR
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie with Emissary Zero.
DEVOUR is a co-op horror survival game for 1-4 players. Stop possessed cultists before they drag you to hell. Run. Scream. Hide. Just don't get caught.
- 8

Backrooms: Escape Together
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
A visually lifelike co-op horror for 1-6 people. Journey through 10 procedurally generated levels, using what's available to survive and progress deeper into the Backrooms.
- 9

Minecraft: Story Mode - A Telltale Games Series
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Adventure with Emissary Zero.
Episode 1 is now FREE - for a limited time! In Minecraft: Story Mode, playing as either a male or female hero named 'Jesse,' you’ll embark on a perilous adventure across the Overworld, through the Nether, to the End, and beyond.
- 10

The Backrooms
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
You find yourself in a strange world with no idea how you got there. As you explore more, the world gets increasingly convoluted and unstable. You are now in... The Backrooms.
- 11

R.E.P.O.
Single-player alternative to Emissary Zero — playable solo, no multiplayer required.
An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.
- 12

Estencel
Single-player alternative to Emissary Zero — playable solo, no multiplayer required. Shares Indie and Adventure with Emissary Zero.
Atmospheric souls-like. Fight enemies and bosses and explore the gloomy city.