Placement of virtual elements in a virtual world associated with a location-based parallel reality game

Computer-implemented methods and systems for locating virtual elements that can be used or collected by players of a parallel reality game having a virtual world that parallels at least a portion of the real world are provided. In particular, the location of virtual elements in the virtual world is determined based on data associated with one or more real world conditions. Virtual elements can be located in the virtual world at locations corresponding to locations in the real world that encourage safe and effective game play. Locating virtual elements in the virtual world based on data associated with real world conditions improves the link between the parallel virtual world and the real world, enhancing the illusion that the virtual world is another dimension of the real world that the player can interact with through the parallel reality game.