Steam app 3176060 · updated 12 Sep 2026, 19:26 UTC
Co-op horror (1-4 players). You are sent to explore a mysterious building at night. Find the Moon and try to return alive.
580 hourly samples, with the daily peak drawn over them. Weekends are shaded.
19 months, March 2025 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 355 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 225 hourly samples. Each dip is a night. Weekends are shaded.
Emissary Zero was released on 28 Mar, 2025.
| Language | Full audio |
|---|---|
| English | |
| French | |
| German | |
| Spanish - Spain | |
| Russian | |
| Portuguese - Brazil | |
| Turkish | |
| Traditional Chinese | |
| Simplified Chinese | |
| Polish | |
| Korean | |
| Italian | |
| Arabic | |
| Japanese |
A blank audio cell means full audio was not marked in the returned language list.
20 achievements in total.
49 developer announcements, Oct 2024 to Jul 2026 · times in UTC
Fixed spectator not working for clients.
Patch notesFixed a bug where TV Head could get stuck under certain circumstances.
Patch notesFixed incorrect animation when sitting.
Patch notesToday 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 other players can only be used once. If…
Rone VineFixed a bug where infected players weren't dealing damage. Added a setting to select the gamepad type for key mapping.
Patch notesRemoved collision from the small liquid creature.Added scaling of the displayed dialog when changing distance.Other minor changes and fixes.
Patch notesFixed the absence of black and white vegetation.A little change for the key icons for RB, LB, RT, LT.
Patch notesFixed a crystial not upgrading.
Patch notes(Following bugs are since 1.2.5)Fixed a bug preventing crystal upgrades.Fixed a bug with the radio and cat.Collision display has been fixed.
Patch notesFixed a bug where small liquid creature eyes were invisible (since 1.2.0).Fixed a bug where the elevator could throw the character out of bounds.Fixed a bug where the level could start unloading before the loading screen appeared.Improved…
Patch notesFixed a bug where the wall on the third floor wouldn't break when a monster escaped the main building.Fixed incorrect reflections in some places on high settings.Other minor changes.
Patch notesFixed a minor bug with levers in the Laboratory.The "Join a Multiplayer Game" menu has been slightly changed.
Patch notesFixed a bug where shadows were missing in some areas of the Lab.Fixed an incorrect animation when sitting.Fixed a bug where some surfaces were rendered as grayboxes.Added an icon to the "Join" menu when the player is in the lobby.
Patch notesThe number of levers in the Lab now dynamically changes during the game. Previously, it was set upon exiting the lobby.The current number of players in a session has been added to the "Join" menu.Also, if you were getting stuck in the main…
Patch notesSeamless multiplayer connection has been added. You can now join both while in the lobby and after leaving the lobby during gameplay. Players will spawn at the last used save terminal. An additional menu has been added to the pause menu for…
Rone VineFixed rain not working since 1.1 (lol) Fixed a bug where the moon could kill players in the Lab without being in it under certain circumstances.
Patch notesAdded a map marker for the dynamite planting location after visiting the Lab. Fixed incorrect map image at the scanner, reduced brightness of the scanner base grid. Other minor changes.
Patch notesFixed a bug where under certain circumstances particles would appear on a destroyed Orangehead. Fixed a bug where when shooting from a Crystal, a message about a destroyed Orange would appear every time.
Patch notesVR SupportAdded VR support. The entire game can be played in VR in single or multiplayer (with VR or flat-screen players). Also, the difficulty is slightly reduced if all players in the session play in VR.New ContentAdded a quest for the…
Rone VineHello everyone! I'm currently working on Update 1.1, which will include VR support. If you have a VR headset, you already can try it out now by selecting the "vr_update" beta branch. Right now, this is an early version, but it will be…
Rone Vine(Finally) Removed region search limitation, now shows all available sessions worldwide.
Patch notesAdded support for Steam sockets, now IP addresses of lobby players should not be available to players. Added ping to the lobby selection menu. Changed the location of the save on respawn near the terminal.
Patch notesAdded localizations for the following languages: Arabic, Japanese, Italian. Missing texts for other languages have been translated.
Rone VineFixed a bug where a quadripped enemy could stop moving.
Patch notesExciting update! Emissary Zero now supports Steam Trading Cards! Collect cards, craft badges, and unlock cool profile backgrounds and exclusive emoticons. {STEAM_CLAN_IMAGE}/45158027/f47aaf3634423fffbd875348b2ed76388bfc83df.png
Rone VineReduced the range of hearing of the enemy in the annex. Fixed a bug where the AI of the enemy in the annex would break when leaving the building. Added a description of the task to the safebox in the northwest of the grounds. Other small…
Patch notesMinor changes.
Patch notesAn option to use two gamepads for local play has been added to the lobby menu.
Patch notesThe enemy in the annex now resets if stuck.
Patch notesFixed a bug where you could dig up batteries with something other than a shovel. Reduced the cooldown timer for the save terminal. Made the shovel more visible. Changed the map for finding the password. Added explanatory notes to the…
Patch notesIncreased max players limit. Fixed a bug where a fresh dead body could be invisible. Reduced the range of the monster's hearing on the third floor. One of the doors on the third floor no longer requires unlocking from the other side.
Patch notesAdded a device to restore almost all items ever picked up. It is located on the eastern stairs leading to the basement. An item is considered picked up if it was carried by any player and the game version had to be 1.0.15 or higher. Car…
Rone VineAdded a machine for obtaining lost batteries for the car. It is located in industrial buildings. Fixed a bug where the worm could kill from a distance. Fixed a bug where the quadruped enemy could grab the player during a jump. Reduced the…
Patch notesFixed a bug where installing a TV instead of a head would not save.
Patch notesFixed connection via the "Join multiplayer game" list in the Main Menu, which was broken in version 1.0.11.
Patch notesUpdated engine version, eliminated stutters at high fps. Added capsule blocking from the first floor of the Laboratory. Slightly increased battery size. Added additional anti-aliasing options. Joining sessions is temporarily available by…
Patch notesFixed a bug where one of the hatches could fail to open. Improved performance when using scanners. Other minor changes.
Patch notesFixed a bug where the monster wouldn't escape from the third floor. Fixed a bug where it was impossible to select Korean localization.
Patch notesAdded a deadzone for the gamepad.
Patch notesFixed a bug where you could use a lever from the courtyard to open the gate and gain access further ahead of time. Made energy retainers more visible. Supplemented some texts for current quests. Reduced perception for four-legged enemies.…
Patch notesReduced the speed, audibility radius, and aggressiveness of quadripped opponents on normal difficulty. Removed the lever handle under the stairs. Now the lever for opening the gate to the grounds is available without repair. Fixed a bug…
Patch notesIncreased the size of numbers that need to be found for the password. Added Korean localization. Decreased the speed of the monster on the third floor. Other small changes and minor fixes.
Patch notesEmissary Zero is released! Thank you very much for your support! Here is launch trailer: If you encounter any bugs, please write about it in the Steam discussions.
Rone VineDemo at Steam Next Fest and Release Date! The demo version of Emissary Zero is participating in Steam Next Fest. And I'm excited to announce that the full version will be released on March 28! Add it to your Wishlist! P.S. Thank you to…
Rone VineDemo has been updated to version 0.4. Starting with this version, saves from the demo are transferred to the full game. Added an indicator of your microphone level (there is currently a bug where sometimes the sound does not work in the…
RoneVineA new trailer for Emissary Zero!
RoneVineAdded voice chat to the demo. Also fixed a bug that prevented the game from running in split-screen mode. If you have any feedback, please write to the Steam discussions or the form at the link.
RoneVineDemo updated to version 0.2. Added split screen multiplayer (up to 2 players), compatible with online multiplayer. Added new enemy and other new content. Added map menu. Added manual save terminals. Bug fixes. Other minor changes.
RoneVineThe slightly rainy demo is out now! It's about 15 minutes long, online multiplayer is available, local multiplayer will be added later. If you have any feedback, please write to the Steam discussions or the form at the link.
RoneVineWhat Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | Project_F.exe | windows | ||
| DirectX 11 version (Low graphics mode) | Project_F.exe | -dx11 | windows | |
| VR (dx12) - for high spec PCs | Project_F.exe | -vr | windows | |
| VR (dx11) | Project_F.exe | -vr -dx11 | windows |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocal | Project_F\Saved\SaveGames | *EZ* and below |
It runs on public data and somebody's spare time.
https://paypal.me/KintaroPalPay[email protected]0x4d559C765AA8BFe336E36d5b76024926767eD38dTJtctWU9uetJaTBoSybd1RErW7n9duTKVG