(CNN) A new smartphone game is challenging Pokémon fans to venture into the real world to "catch 'em all," which is concerning some police officers in Australia.

Pokémon GO uses augmented reality to place creatures and items in real locations, including the Eiffel Tower, Shinjuku Station, and... Darwin Police Station in Australia.

In a Facebook post, the Northern Territory Police, Fire and Emergency Services asks players not to go hunting inside the station, saying that they merely need to be close to the building to collect their goodies.

As you walk through the world, Pokémon GO uses your phone's GPS to alert you when you're close to a creature. When you turn on the camera, the Pokémon appears overlaid on whatever your phone sees, and players can flick Pokéballs with their fingers to capture them.

Explaining to the neighbors that you just gotta get this Evee real quick and you'll leave lol #pokemongo #catchemall pic.twitter.com/36SRBkMmGr — TomGirlGamer (@1TomGirlGamer) July 6, 2016

While most Pokémon diehards are delighted about the launch, some worry about what their surroundings will say about their Pokémon chasing behavior.

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