Indonesian game developer Toge Productions announced that their new multiplayer survival horror game, Whisper Mountain Outbreak, will be launched on Steam Early Access on 11 August 2025 at 2100 West Indonesian Time (GMT+7).
In Whisper Mountain Outbreak, players take on the role of agents from a secret government bureau assigned to investigate and eliminate paranormal threats. The game is set in a remote, mist-shrouded mountainous area called Mt. Bisik, where players must escape by exploring abandoned buildings, fighting monsters, scavenging resources, and solving puzzles.
Players can choose from three random classes out of six available specialisations, each offering unique skills that influence gameplay. Players will need to work together to survive. Whether by sticking together or splitting up, teams must balance resource management, puzzle-solving, and combat to survive the ever-growing horrors of the mountain.
Here are the game features listed on their Steam page:
- Survive and fight the horde
Monsters will come in waves. Fight them off using a variety of melee and ranged weapons, use herbs to recover your health, and protect each other’s backs! - Co-op multiplayer madness
Teamwork is key in this race to safety. Communicate using in-game proximity voice chat, save downed teammates, and share the scarce resources you find. - Explore, solve puzzles, and find a way to escape… together!
Work together to solve puzzles, find keys, unlock doors, and figure out a way to escape the curse. - Learn new skills and craft items
Turn your hard-earned experience and resources to tackle harder missions by utilising your newly learned skills and crafted items. - 2.5D retro graphics with a claustrophobic, dark, and creepy atmosphere
A lingering fog, tight rooms, limited visibility, and eerie whispers are presented in 2D pixel characters with 3D low-poly environments. Offering both nostalgic and freshly terrifying experiences. - Choose your specialisation
At the start of each run, choose from three random classes (out of six total). Each class has unique perks and skills, allowing for different playstyles and strategies.
Established in 2009, Toge Productions is an Indonesian game developer and publisher based in Tangerang. Other titles released by the publisher in cooperation with other Indonesian developers include A Space For The Unbound (Mojiken Studio), My Lovely Wife (GameChanger Studio), Rising Hell (Tahoe Production), and point-and-click puzzle Adventure When The Past Was Around (Mojiken Studio).
The Indonesian Anime Times








