Mechanics
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Adverse Reactions
The music is meant to be exclusive to the original mobile release, Plague Inc.. In the PC and console versions of the game, Plague Inc. Evolved, the intended theme is Z Com Falls; however, for unknown reasons, Adverse Reactions ends up being the theme used in the mobile and PC releases of the game.
Airport
Airports are a feature in Plague Inc. and Plague Inc: Evolved. They receive airplanes from other countries.
All In Your Head
The music is exclusive to Plague Inc: Evolved, used as the Neurax Worm's theme. For the original Plague Inc., the Neurax Worm's theme is Direct Control.
Arid climate
Arid climate is a type of climate. Countries with this type of climate tend to be very dry, reducing the use of transmissions such as Water 1. Air 1 can help in increasing transmission rate in countries with an arid climate. The Xerophile gene also increases your disease's effectiveness in arid countries. One of the most well known examples is Saudi Arabia. The opposite counterpart to an arid climate is a humid climate.
Bacterial Pneumonia
Pathogen damages pulmonary lining, allowing lethal secondary bacterial infections. Antibiotics will reduce impact
Bacterial Resilience 1
Create bacterial shell to protect against all climates
Bacterial Resilience 2
Bacterial shell thickened, further increasing bacteria survivability in all climates
Bacterial Resilience 3
Bacterial shell practically impregnable, further increasing Bacteria survivability in all climates
Balanced climate
Balanced Climate is a type of climate in Plague, Inc. Countries with this type of climate don't require Heat or Cold resistance for your plague to spread. They all tend to have other characteristics, so you must evolve in relation to those to get a plague spreading in a country with a balanced climate, especially if it is rich as well.
Black Pox
Significant decrease in coagulation factors and platelets gives ability to develop highly lethal haemorrhagic smallpox
Cedar Traits
Pathogen develops traits of the benign Hendra Virus. Allows the virus to survive away from a host, but more likely to be cured.
City Cam
City Cams are a feature exclusive to Plague Inc: Evolved.
Cold climate
Cold climate is a type of climate. Countries with this climate are typically very cold, and it may be hard to spread a plague in these temperatures. Cold Resistance I and II can help greatly with this, increasing the infection in these countries much faster.
Countries
Countries are parts of the world in Plague Inc. and Plague Inc: Evolved, sometimes spanning multiple real-life countries. Each country has varying population size and density, social and natural environments, and wealth. Countries with higher population density are easier to infect, while wealthier countries will greatly slow weaker infections down with modern drugs and generally tend to contribute more to cure research. All countries will try to counteract infection and death rates by trying their best to counter any known methods of the plague spreading. This can vary between exterminating insects when the plague is known to be transmitted through…
Deactivate Modified Genes 1
Reduce lethality (by 2) by deactivating key genes controlling toxin production
Deactivate modified genes 2
Reduce lethality (by 3.5) by deactivating key genes controlling toxin production
Deactivate modified genes 3
Reduce lethality (by 5) by deactivating key genes controlling toxin production
Direct Control
The theme is only used in the original Plague Inc. game as the Neurax Worm's theme. In Plague Inc: Evolved, the Neurax Worm's theme is All In Your Head.
Droplets 3
Pathogen able to survive for longer in expelled droplets. Increase infectivity, especially on planes
Drug Immunity
Intelligent cell receivers able to repel all modern medicine - increasing effectiveness in wealthy countries
EJ2 Vaccine Shield
Further genetic variation render the experimental EJ2 strain smallpox vaccine ineffective
EJ7 Vaccine Shield
Further genetic variation render the experimental EJ7 strain smallpox vaccine ineffective
EJ13 Vaccine Shield
Further genetic variation render the experimental EJ13 strain smallpox vaccine ineffective
Encephalitic Shift
Gain ability to cause severe neurological symptoms.