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A meteor from outer space carries an utterly alien plague type. Humans are irrelevant - can you transform the planet into a solid crystal?
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
How it worksTracked since Jul 7, 2026.
Steam Social Deduction Fest ends
Official stores with direct support.
This is the base game required to play this DLC. Other expansions may also be required.
In this Special Disease type, crash your meteor into Earth and begin transforming it into a crystalline paradise of your own making.
Change the World
Crystalise the world from the streets to the core of the planet. Pass the crystallisation onto humanity, shatter their bodies into tiny pieces.
Watch the Skies!
Bring meteors from space to spread your infection, destroy research or even an entire country!
Race to Research
Humanity will deploy specialist dynamic responses to your actions. Fight back before they destroy you!
Zombies vs. Earth
A melting glacier unleashes a forgotten nightmare. Greenland falls to the zombie hordes overnight! There is no virus, no cure, only the relentless march of the undead. Can they consume the world?
Anti-Vax
Faith in vaccines is collapsing. Global vaccination campaigns fight to hold the line, but weaponised conspiracies and viral misinformation are infecting the truth! What's the worst that could happen?
Hell on Earth
It's time to subjugate the world! Unleash a heat-loving, hell-spawned plague to corrupt people, animals and even the world itself. Satan is waiting in the depths...
Herd Immunity
What doesn't kill humanity makes it stronger. In this upgraded simulation, infected people may now recover from diseases and develop a natural immunity to prevent reinfection. Can Herd Immunity save the world?
Measles
Measles is one of the most preventable diseases in the world thanks to modern vaccines, but misinformation and dangerous new mutations could lead to a deadly resurgence. Can you bring Measles back from the brink?
Cure Mania
The world’s gone cure crazy! Scientists are obsessively coordinated, sharing breakthroughs in real time across every border. Cure planes will launch earlier, and *much* more frequently.
Can your disease survive when the skies are painted blue?
Leprosy
Leprosy still infects around 200,000 new people every year due to social stigma and long incubation periods but thanks to modern medicine, it's fully treatable. Can you save humanity's oldest disease from long-term decline?
Right now the cheapest offer for Plague Inc: Aliens & Anti-Vaxxers is CA$6.47 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Plague Inc: Aliens & Anti-Vaxxers is CA$5.39 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Plague Inc: Aliens & Anti-Vaxxers drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
