DemoCasual

Operation: Outbreak Idle Demo

72KS
Released Jun 6, 2026by DeadLogicsPositive(100% of 15 Steam reviews)

Play the Operation: Outbreak Idle Demo and survive against relentless zombie hordes in the first biome. Experience the core progression system, unlock powerful upgrades, and get a preview of the full game's weapons, skills, and zombie-slaying action.

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About Operation: Outbreak Idle Demo

Fight for survival in a world overrun by endless zombie hordes. Build your defenses, unlock devastating weapons, and upgrade powerful skills as you battle increasingly dangerous waves of the undead.

Call in overwhelming support such as B2 bomber strikes and attack helicopters to clear massive groups of zombies. Unlock deadly technologies like the Circular Saw, discover new abilities, and create powerful builds through a deep progression system.

As the hordes grow larger and stronger, every upgrade matters. Strengthen your arsenal, adapt your strategy, and see how long you can survive against thousands of relentless zombies.

🔥 Unlock New Skills

Expand your arsenal with powerful new abilities. Experiment with different combinations and create unique strategies for survival.

🧟 Obliterate Massive Zombie Hordes

Face thousands of undead enemies and unleash chaos across the battlefield. Watch entire hordes fall under your growing arsenal of weapons and skills.

☢️ Devastating B2 Airstrikes

Turn the tide of battle with powerful B2 bomber strikes. Erase massive zombie formations and create breathing room when the battlefield becomes overwhelming.

🚁 Call in Helicopter Support

Deploy an attack helicopter to patrol the battlefield and bombard approaching hordes with explosive firepower.

📈 Upgrade Your Power

Invest in upgrades to increase damage, improve efficiency, and strengthen your defenses against ever-growing zombie threats.

⚙️ Unlock the Circular Saw

Discover and unlock the deadly Circular Saw. Slice through waves of zombies with a relentless spinning blade designed for maximum destruction.

Game details

Operation: Outbreak Idle Demo reviews

100% positive reviews all-time.

System requirements

Minimum

Minimum:
  • OS: Windows 10/11 (64-bit)
  • Processor: Intel Core i3-9100 / AMD Ryzen 3 3200
  • Memory: 8 GB RAM
  • Graphics: NVIDIA GTX 750 Ti / AMD Radeon RX 550 or equivalent with 2 GB VRAM
  • Storage: 1 GB available space
  • Sound Card: DirectX compatible with surround sound support

Recommended

Recommended:
  • OS: Windows 10/11 (64-bit)
  • Processor: Intel Core i5-10400 or equivalent
  • Memory: 16 GB RAM
  • Graphics: NVIDIA GTX 1660 super or equivalent
  • Storage: 1 GB available space
  • Sound Card: DirectX compatible with surround sound support