New Demo For Steam Next Fest!

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WHAT'S IN THE DEMO?

Dive into the chaos with this 100% free demo and get access to:

• 3 missions: two prologues and one full mission

• A fully replayable mission with 4 difficulty levels

• 4 unique Disaster abilities (out of 12 total)

  • Storm

  • Tornado

  • Respiratory Outbreak

  • Asteroid Impact

• Hours of strategic, world-ending gameplay

THE ULTIMATE DOOMSDAY SIMULATOR

Extinction Day lets you experiment with and combine multiple disasters in a variety of scenarios. From natural catastrophes to deadly diseases, full scale warfare, zombie invasions and more. With more than 12 unique disaster abilities, 20 scenarios, dozens of perks and 4 difficulty settings, it will keep you destroying humanity for many hours.

​UNLEASH DESTRUCTION ON AN EPIC SCALE

Our unique technology simulates over 80,000* humans simultaneously on screen as you deploy devastating plagues, natural catastrophes, global conflicts and more tragedies. Designed using real-world data for an authentic simulation of humanity’s downfall.

Watch disasters unfold in real-time, dynamically evolving and spreading based on your strategic choices. Combine different disasters to create chain reactions and watch civilization collapse before your eyes. 

HUMANITY WILL FIGHT BACK

Get ready to be challenged as humanity tries to escape your wrath. Create deadly strategies and exert influence over humans in order to exterminate them before they find a path toward preserving the human race.

​​​SANDBOX MODE

Want pure destructive freedom? Sandbox mode removes all restrictions, letting you unleash any combination of disasters at will. Create your own scenarios and experiment with different doomsday combinations.

​*Number may be lower depending on players' hardware.