Plague Inc or Plague Incorporated is a strategy game for iPod Touch, iPhone and iPad developed by Ndemic Studios. The game, which involves mutating your virus, bacteria or fungi to infect and eventually destroy mankind, is based off of the flash game Pandemic.
The game begins with the player given the choice to name their plague and select from one of 7 plague types or 4 bonus types. All plague types can be unlocked by completing the previous plague type on normal or brutal difficulty, or by purchasing all of them via an in app purchase. The 4 bonus plague types can only be unlocked by beating all regular plague types on brutal difficulty.