
Reporting in, Agents.
The Public Beta Branch: Version 501 is now available for testing, available for both players and Friends' Pass owners.
Here's how you can change the game build to the Beta Branch:
Access the game's properties.

Choose the Game Versions and Betas tab and choose beta game version.

Beta Branch Build Ver.501 Patch Notes
Here are the changes implemented in this beta build:
IMPROVEMENTS & NEW FEATURES
- New Map & Puzzles: Explore the mysterious Research Facility
- Meta Progression
- Task Records – Complete challenges to unlock rewards and new content.
- XP & Level Up – Earn XP from your runs and Task Records to level up and gain Merit Points.
- Loadout – Spend Merit Points to activate perks and customize your starting bonuses for each run.
- New Weapon: Machete melee weapon.
- Scenario Update
"The Outbreak" scenario has been split into two smaller, self-contained scenarios to create a more focused gameplay experience.
BUG FIXES
- Fixed the Courtyard Puzzle in the Large Police Station map that could not be opened.
- Fixed an issue where players could not extract or return to the lobby from the Large Tourist District map.
- Fixed multiple issues causing the Leaderboard to not function correctly.
- Fixed ammo disappearing from a weapon's magazine after combining it with an attachment.
- Fixed the Secret Vault cinematic in Hotel de Maan being triggered repeatedly after the vault had already been opened.
- Fixed an item duplication exploit that could occur when reconnecting through Quick Join.
- Fixed an issue where players could become stuck on doors.
- Fixed an issue where players could push the Hairmaiden outside the barricaded area in the Safehouse map.
- Fixed the Ripped Page puzzle in Hotel de Maan not synchronizing correctly between players after the pages had been combined.
- Fixed the Meditation skill becoming inactive after a player reconnected to the session.
- Fixed an issue where player movement animations played at an abnormally fast speed after dropping an Armor Vest.
- Fixed an issue where the Time Rush mission type displayed a 10-minute time limit in the mission selection, while the actual time limit was only 7 minutes.
- Fixed an issue where, in some cases, a player could join a session as a 5th player. Since the maximum supported player count is 4, entering the map in this state could result in broken visuals.
- Fixed an issue where a regular enemy could spawn with an abnormally high amount of HP (sometimes exceeding 1,000 HP), making it much more difficult to defeat than intended.
The Meritocracy Update Preview
Here are some sneak peeks of the upcoming update, which will be live next month in October. We are currently testing the bits for the upcoming update, and your help in testing the new beta build would be much appreciated before we put it into the public build!
More “found footage” dropped from the B.R.I.M. Support Division.
Find out what's coming next month on The Meritocracy Update. Stay tuned!
✅ New Puzzles - Reflective Ray
The Research Facility was established years before the Mount Bisik incident, funded by the same energy and mining corporation that would later operate in the region. What remains inside suggests they may have known there was something unusual about Mount Bisik long before the first mining operation began.

✅ Meta Progression : Task Records
A new set of challenges for players to complete throughout the game. Complete specific tasks to unlock new rewards and content for future runs.




✅ Meta Progression: Loadout
Lets players customize their runs with additional starting items and bonuses. Spend your Merit Points to activate the perks you want to bring into each run.

✅ Scenario Update
There are now 2 new scenarios available, "The Scroll of Evil" and "Flesh in the Machine". Agents now have to go through a series of smaller maps before culminating in one large final map.
We want to see if these changes will improve Whisper Mountain Outbreak in Early Access as we implement the new Meritocracy System.

✅ New Melee Weapon: Machete
A swift melee weapon built for rapid strikes, but unable to knock enemies back. Fully charge your attack and release it to unleash two quick slashes in succession.

📝 Leaderboard Reset Notice
With multiple scenarios now available, each scenario will have its own separate leaderboard. We will reset the leaderboard on this beta branch build.
As Whisper Mountain Outbreak is still in Early Access, please note that leaderboard data may be reset periodically as we continue developing, balancing, and improving the game.


We look forward to your participation and feedback!
The Meritocracy Update showcased in the beta branch introduces how mission deployments contribute to the growth and access to even more powerful arsenals to solve even harder challenges in the field. Everything in this Beta Branch is still a work in progress, and your experience will help us evaluate these features before they arrive in the public build.
If you encounter any issues, bugs, or simply have suggestions to share, you can reach us through Steam Discussions, our social media channels, or the Toge Productions Discord community.
You can also send your feedback directly through our email or feedback form:
Email: [email protected]
Feedback form: Whisper Mountain Outbreak Feedback Form
Thank you for continuing to support Whisper Mountain Outbreak throughout Early Access.
We'll see you soon on the next update announcement 🫡
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We will continuously monitor and improve the game in Early Access. Stay updated with us!
Be prepared for the outbreak, agents.
Do keep in touch for a new mission briefing.
Stay sharp, and keep surviving! 🧟♂️💥
— B.R.I.M. Support Division