It has already been released in Australia, New Zealand and parts of the US, with a UK release date promised soon.
The game uses GPS to pinpoint the users’ exact location and distributes random Pokemon across a town or city.
Players can then catch, keep, train and trade the characters with other users.
It has already reportedly led to gamers being robbed as they chased Pokémon in isolated locations, while one man was reportedly caught cheating after his partner saw he had caught a Pokémon near to his ex-girlfriend's house.