Plague Inc. is an iOS, Android and Windows Phone strategy video game, developed by one-man developer Ndemic Creations. The player creates and evolves a pathogen in an effort to destroy the world with a deadly plague. The game uses an epidemic model with a complex and realistic set of variables to simulate the spread and severity of the plague. The PC and Xbox One version is entitled Plague Inc: Evolved, which includes adjustments and additions to the gameplay.