While it remains to be seen how long it will last, Pokémon Go is the craze of the summer and now it's launched officially in Ireland.
And despite the fact that it's helping people get outside more and talk to each other, it seems not everyone is a fan - especially those whose properties have unwittingly become Pokémon hot spots.
Like this guy in the US who was so sick of Pokémon Go players crowding his garden, he posted this sign listing all of the stupid crazes he's lived through - from hammer pants to "the presidency of George W. Bush".
But, he says, Pokémon Go is the worst and advises them to take a long hard look at themselves.
There's always one.