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Extinction Day

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About Extinction Day

Extinction Day is a strategy game in which you cause humanity’s extinction before it can escape to the space Ark. You deploy disasters, plagues and warfare around the globe, gain resources from destruction and expand your reach while humanity works to survive.

Humanity fights back

Governments mobilize to contain your disasters and secure key territories. Scientists develop countermeasures to slow your expansion, while global aid efforts stabilize regions and limit the damage. As the end approaches, humanity begins building a space Ark to escape.

Cause destruction

You can trigger over 10 unique disasters, including plagues and global warfare, and combine events to create powerful, unpredictable chain reactions. Active abilities let you strike regions precisely. You experiment with different approaches to find the fastest path to extinction.

Shape your strategy

Manage resources to fuel your expansion, choose an upgrade path and unlock abilities to strengthen your strategy. You adapt as humanity evolves and pushes back; timing, positioning and combinations all matter.

Campaign and challenges

The game includes 18 campaign missions across 4 difficulty levels and 28 challenge scenarios with unique rules. You can unlock over 70 perks and upgrades and complete 25+ achievements, with dozens of hours of replayable destruction.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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