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4-player co-op, zombie slaying, base building, boss battling mayhem! Cleanse the infected wave by wave and upgrade your base with traps & defenses in Ultimate Zombie Defense 2!
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Whisper Mountain Outbreak on Steam - User reviews, Price & Information
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Escape room meets co-op survival horror. The year is 1998, and an ancient curse has been unleashed, trapping everyone on Mount Bisik. Alone or with up to 4 players, you must explore, find clues, figure out a way to escape...and survive the horror.
Whisper Mountain Outbreak is a early access, online co-op and survival horror game
developed and published by Toge Productions.
Released on August 11th 2025 is available only on Windows
in 14 languages: English, Indonesian, Simplified Chinese, Traditional Chinese, Japanese, French, German, Spanish - Spain, Korean, Polish, Portuguese - Brazil, Russian, Thai and Turkish.
It has received 2,609 reviews of which 2,211 were positive and 398 were negative resulting in a rating of 8.2 out of 10. 😎
The game is currently priced at 7.79€ on Steam, but you can find it for 2.55€ on Eneba.
The Steam community has classified Whisper Mountain Outbreak into these genres:
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System requirements
These are the minimum specifications needed to play the game. For the best experience, we recommend that you verify them.
Windows
- Requires a 64-bit processor and operating system
- OS: Windows 10 or later
- Processor: 2.4 GHz or faster processor
- Memory: 4 GB RAM
- Graphics: 1 GB VRAM, support Pixel Shader version 2.x or above
- DirectX: Version 10
- Network: Broadband Internet connection
- Storage: 1 GB available space
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User reviews & Ratings
Explore reviews from Steam users sharing their experiences and what they love about the game.
The game feels very solid overall; however, co-op players who aren’t the host lose their progress when the game is reloaded, even if they survived the run. This is disappointing, especially after a strong session you’d want to continue, would love that to be fixed before we continue playing it again.
Played this as 2 players. Can only really recommend this at its current state due to how cheap it is and because it has friend pass as well. The game is fun for the first little bit of time which is 1 playthrough since it doesn't take that long to complete all the levels. I have played through it twice now and I am only sitting at 5 hours after 2 whole playthroughs. I'm aware that this is still early access and I am 100% going to play it more once more will be added. Other than the short run which can be credited to it being early access I also have a few other pain points with the current version. **SPOILERS AHEAD** THE BAD - The last map is extremely boring. I think they tried to go for something epic, but the fact that you are just killing waves of monsters with access to all the loot you have assembled, and the fact that there is no real clear win at the end of it since it is meant to end your run is extremely boring. I think having some big boss battle or something towards the end and just end it there would have been much more satisfying. - The classes you pick from at the start feel pretty meaningless, starting with a pistol? I can just pick one up at the start. I know this is more helpful in bigger groups of players but still. Starting with an axe? Feels kinda same honestly. I'm not saying that the classes should completely warp how you will end up playing, but I played fireman with guns for first playthrough, I'm supposed to have bad aim which sure it wasn't stellar, but it didn't really matter at all. My initial feeling of picking a class was that it seemed really cool and I was really looking forward to it having some effect on how I would do the playthrough, but it just didn't really matter. - The objectives felt too similar. I don't think you can do too much here, but this is also where the last mission kinda comes in, I would have loved if there were a similar thing like what we had in L4D2 where you have to do a last stand against a horde or something in a map and then ditch after the timer has run out, could be waiting for a helicopter or something like that. I think escort missions could also be a breath of fresh air, maybe have a mission where you need to save a scientist or something that you can give a gun and heal and stuff while you escort him and zombies follow. - Similarly to the maps being too similar. The endless horde that pops out when you pick up the objective is really quite boring ngl. Most games me and my friend managed to just run away and get to the car without too much issue. I think again here it would have been nice if you had some variety, and that the horde actually mattered. It might change with higher difficulty but we will see. Personally I think it could be cool if you could board windows similar to the last mission and maybe prepare an escape route instead of just having an easy one available always. Maybe have a smaller horde wait around the car so you get sandwiched in between hordes, or have the hordes come in waves and make it so you can't leave in the car until the area is cleared or something. We often just left while 5-6 zombies and specials were flooding our car and that just seems off as well. - Weapons are a bit lacking. Guns are OK, there is a bit of distinction in the different weapons, but the SMG seems better than the AR for example since you can craft ammo a lot easier for the SMG and they seem to do pretty similarly (SMG can be upgraded, AR can't as far as I could tell). Melee weapons are a bit of an issue though, they feel very similar to me. The Katana is distinct which makes it a lot of fun to use, but the other weapons feel too samey in my opinion. I also wish there were some sort of light weapon or if weapons maybe had more utility. Like axe/hammer could break down obstructions maybe would be cool. A knife that mainly utilize quick attack and has a charged attack that can one shot regular zombies but has no form of cleave would maybe also be a nice option. - I think that it would also be really nice if we could store things in the car as well. It seems kinda silly we have this big truck and I can't store an extra gun or anything in it. Car storage would allow for players to prep more things and that would in turn add more depth and allow for the maps to have more challenges which would all be positive I think. - The replayability is not really there. It lacks some sort of randomization that really matters to make the game with playing more than once in my opinion. THE GOOD - Audio was on point. The only issue which is totally fine since it's still early access were that sometimes special monsters audio would linger after killing them for some reason? Noticed that we would have hordes that would spawn them and after we cleared them we could still hear the audio queues for the rest of the map. Music specifically was probably the best of the game. - The style was also great, the game invokes RE feelings while still being distinct enough. - Combat was also overall great. I really hope for the best for this game, it has a good foundation to start off on, but it needs to see improvements to become a truly good game. It has the potential, but so many games do and does nothing with it. I hope this one isn't one of them.
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Frequently Asked Questions
Whisper Mountain Outbreak is currently priced at 7.79€ on Steam.
No, Whisper Mountain Outbreak is currently not on sale. You can purchase it for 7.79€ on Steam.
Yes, Whisper Mountain Outbreak received 2,211 positive votes out of a total of 2,609 achieving a rating of 8.15.
😎
Whisper Mountain Outbreak was developed and published by Toge Productions.
Yes, Whisper Mountain Outbreak is playable and fully supported on Windows.
No, Whisper Mountain Outbreak is not playable on MacOS.
No, Whisper Mountain Outbreak is not playable on Linux.
This information about Whisper Mountain Outbreak is not available yet.
This information about Whisper Mountain Outbreak is not available yet.
No, Whisper Mountain Outbreak does not support VR.
Whisper Mountain Outbreak offers both single-player and multi-player modes.
Whisper Mountain Outbreak includes Co-op mode where you can team up with friends.
No, Whisper Mountain Outbreak does not currently offer any DLC.
No, Whisper Mountain Outbreak does not support mods via Steam Workshop.
No, Whisper Mountain Outbreak does not support Steam Remote Play.
Yes, Whisper Mountain Outbreak is enabled for Steam Family Sharing. This means you can share the game with authorized users from your Steam Library, allowing them to play it on their own accounts. For more details on how the feature works, you can read the original Steam Family Sharing announcement or visit the Steam Family Sharing user guide and FAQ page.
You can find solutions or submit a support ticket by visiting the Steam Support page for Whisper Mountain Outbreak.
Data sources
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Additionally, we incorporate data from the SteamSpy API, which offers insights into game sales and player statistics. This helps us present a comprehensive view of each game's popularity and performance within the gaming community.
Last Updates| Steam data | 30 August 2026 22:37 UTC |
|---|---|
| SteamSpy data | 04 September 2026 14:38 UTC |
| Steam price | 11 September 2026 18:47 UTC |
| Steam reviews | 11 September 2026 09:53 UTC |
If you'd like to dive deeper into the details about Whisper Mountain Outbreak, we invite you to check out a few dedicated websites that offer extensive information and insights. These platforms provide valuable data, analysis, and user-generated reports to enhance your understanding of the game and its performance.
- SteamDB - A comprehensive database of everything on Steam about Whisper Mountain Outbreak
- SteamCharts - Analysis of Whisper Mountain Outbreak concurrent players on Steam
- ProtonDB - Crowdsourced reports on Linux and Steam Deck Whisper Mountain Outbreak compatibility
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Game modes
Multiplayer
Features
Online players
14
Developer
Toge Productions
Publisher
Toge Productions
Release
11 Aug 2025
Platforms
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