Keen digital observers will know that, for now, Pokémon Go is wildly popular. We understand that it encourages people to experience the great outdoors whilst glued to a screen and throwing virtual tennis balls at virtual monsters to capture them and train them into a captive army poised to fight to the death for the glory of their owners. IMProperty prefers playing "Snake". 

"Building" magazine notes that contractors are increasingly having to warn people away from their sites as the game developers (Niantic) have spawned Pokémon on live building sites. There is a webpage where owners and contractors can warn Niantic about issues like this. 

Legally, and without jumping on bandwagons (which presumably don't get generated until level 20 of Pokémon Go?), we should note that occupiers of land do have a duty to take all reasonable steps to make sure that visitors and trespassers don't come to harm because of dangerous features of their land. Owners of land may want to double check that someone has not decided to generate a virtual pigeon ( or "Pidgey") on or near lakes, pits, cliffs, or other dangerous features. They can contact Niantic, and should consider checking their signs and fences.