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Whisper Mountain Outbreak

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.

Steam Page
Release
August 11, 2025
355 days ago
Steam Reviews
Very Positive2,527 reviews84.7%

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Game contextLatest: IGF Team
ContextThe evidence factors used to assess whether this game belongs on IndieGame.Fan.Status
Notes
Latest Contributor: IGF TeamEdit notes
Updated: Jul 13, 2026Developer scaleThe operating scale of the game's developer.
Updated: Jul 13, 2026Publisher scaleThe operating scale of the game's publisher.
Toge Productions meets the large-publisher game and partner thresholds.
Updated: Jul 13, 2026Publisher statusHow the game's publishing relationship is classified.
Search Google: How is Whisper Mountain Outbreak and Toge Productions funded?FundingThe known source of funding behind the game.
Search Google: Who controls the creative direction and IP for Whisper Mountain Outbreak and Toge Productions?Creative controlWho appears to retain creative control of the game.
Updated: Jul 13, 2026Release statusWhether and how the game has been released.

Media

13 items

About the Game

Whisper Mountain Outbreak is an isometric co-op PvE multiplayer survival horror game where you and your friends must work together to escape the cursed fog-covered Mt. Bisik.

Explore abandoned buildings, fight monsters, scavenge resources, craft items, solve puzzles, and figure out a way to escape the whispering madness.

STORY

It’s 1998; a mining operation on Mt. Bisik inadvertently unleashed an ancient horror when they disturbed a ruin buried deep inside the mountain.

People started hearing whispers and seeing monsters when a mysterious fog suddenly appeared and covered the area surrounding the mountain. Now, you and your friends are trapped in the cursed Mt. Bisik.

FEATURES

  • 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 utilizing 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, presented in 2D pixel characters with 3D low-poly environments. Offering both nostalgic and freshly terrifying experiences.

  • Choose your specialization
    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.