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Emissary Zero

Emissary Zero

Co-op horror (1-4 players). You are sent to explore a mysterious building at night. Find the Moon and try to return alive.

Released Mar 28, 2025 Developer Rone Vine Platforms Windows HorrorMultiplayerOnline Co-OpPsychological HorrorCo-op
View on Steam ↗ $4.94 (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

81.7%positive1,139 reviews
Recommended · 21 found this helpful

“After completing this game; there are a few things to note. 1) I wish there was a bit more guide on the missions and or map. The map is faulty and not helpful in the slightest. 2) The mapping of the killers is horrible, they continue to go thru walls and kill us thru walls. All…”

— a player, Steam review · 7 hrs played
Recommended · 6 found this helpful

“Emissary Zero, This game, while it only took me and my friend 5.2 hours to beat it, has been very, very fun. The feeling of fear that was instilled in us throughout the game whether it be getting chased by the Covid Heads, Huey Magoos, or the Moose-Man, all in the quest to free…”

— a player, Steam review · 5 hrs played
Not recommended · 6 found this helpful

“the game glitched at the end and my friend with the dynamite glitched out of the elevator so we got softlocked. also the final task felt very overwhelming, and it feels like the dev just kinda gave up with the last "quest"”

— a player, Steam review · 5 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-11 14:13 UTC · history via SteamCharts.

69playing at last check
7024-hour peak
775all-time peak
0 250 500 2026 262 avg · May 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

20achievements
36.9%median completion
1.4%rarest: Easter eggs
98.6% of players 90.6% of players 80.0% of players 79.2% of players 72.9% of players 64.0% of players 59.5% of players 46.1% of players 42.0% of players 38.8% of players 36.9% of players 35.9% of players 35.7% of players 15.1% of players 14.7% of players 6.5% of players 5.2% of players 2.5% of players 1.9% of players 1.4% of players 98.6% 0% most earned rarest
Almost everyone has
98.6%New game — Start playing.
90.6%Finally, some fresh air — Get out of the basement.
80.0%Oh... Hello... — Talk to the Sranger lady.
Rarest badges of honor
1.4%Easter eggs — Collect all the Easter eggs.
1.9%Meow — Hidden achievement
2.5%Supremacy of the black liquid — Hidden achievement

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$4.94−45% right nowcurrent · sampled 2026-07-26 08:39 UTC
$8.99base price
$4.94lowest since tracking began2026-07-25
US4.94 USD−45%
EU4.83 EUR−45%
UK4.11 GBP−45%
Australia7.25 AUD−45%
Canada6.48 CAD−45%
Japan550 JPY−45%
Brazil16.49 BRL−45%
China19.80 CNY−45%

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$2.9 Brazil Japan Canada US Australia UK EU≈$5.5

Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.

$0 $5 $10 07-11 07-14 07-17 07-20 07-23 07-26

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

May 15, 2026
Patch 1.3.2

Fixed a bug where TV Head could get stuck under certain circumstances.

Apr 01, 2026
Patch 1.3.1

Fixed incorrect animation when sitting.

Mar 28, 2026
Update 1.3 - Nightmare Difficulty mode

Today marks one year since the game's release!Another difficulty mode has been added: Nightmare.The difficulty has been increased even further. There are no save points. Each terminal used to revive o

Feb 19, 2026
Patch 1.2.10

Fixed a bug where infected players weren't dealing damage. Added a setting to select the gamepad type for key mapping.

Feb 17, 2026
Patch 1.2.9

Removed collision from the small liquid creature.Added scaling of the displayed dialog when changing distance.Other minor changes and fixes.

Games like Emissary Zero

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Escape the Backrooms Escape the Backrooms 89.0% · 45,247 reviews shares Escape Room, Stealth, Dungeon Crawler, Online Co Op In Silence In Silence 72.2% · 6,084 reviews shares Stealth, Online Co Op, Survival Horror, Co Op FOREWARNED FOREWARNED 92.0% · 4,612 reviews shares Online Co Op, Survival Horror, Co Op, Dark DEVOUR DEVOUR 90.1% · 27,061 reviews shares Stealth, Online Co Op, Survival Horror, Co Op PANICORE PANICORE 75.1% · 5,285 reviews shares Stealth, Online Co Op, Co Op, Dark MADiSON MADiSON 85.4% · 1,332 reviews shares Stealth, Survival Horror, Dark, Psychological Horror Backrooms: Escape Together Backrooms: Escape Together 89.7% · 13,511 reviews shares Online Co Op, Survival Horror, Co Op, Psychological Horror We Were Here We Were Here 89.9% · 15,866 reviews shares Escape Room, Online Co Op, Co Op, Dark

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAdventure, Indie, Massively Multiplayer
Player tagsHorror · Multiplayer · Online Co-Op · Psychological Horror · Co-op · Survival Horror · First-Person · Exploration · Escape Room · Adventure · Action · Puzzle (SteamSpy community voting)
FeaturesSingle-player · Multi-player · Co-op · Online Co-op · Shared/Split Screen Co-op · Shared/Split Screen · Steam Achievements · Tracked Controller Support
LanguagesEnglish, French, German, Spanish - Spain, Russian, Portuguese - Brazil, Turkish, Traditional Chinese, Simplified Chinese, Polish, Korean, Italian, Arabic, Japanese
Achievements20
Estimated owners20,000 – 50,000 (SteamSpy)
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 (64-bit) Processor: INTEL CORE I5-8400 or AMD RYZEN 3 3300X Memory: 6 GB RAM Graphics: NVIDIA GEFORCE GTX 750 Ti DirectX: Version 11 Storage: 5 GB available space VR Support: SteamVR Additional Notes: The system requirements listed above apply to playing on a flat-screen monitor. VR requires higher specifications.