While puzzle phenomenon Candy Crush Saga has around 20 million daily active users, they claim Pokemon Go has already reached 21 million.
After a week delay, Pokémon Go is now available in the UK.
Following the huge success of Pokemon Go, it has been reported that Hollywood studios are scrambling to sign a deal for the Pokemon movie rights.
Luckily, though, the game is linked to your account rather than the app itself.
Police in Darwin, Australia, also issued a message to users on Facebook, asking them to refrain from entering the city's police station, which had been marked as a PokeStop in the game.
"There have been mooted dangers, but I think you have to look at it in the way you would in real life, if somewhere looks unsafe in real life, don't go there in the game, no matter what the reward in the game".
Launching originally in Australia and New Zealand, USA and Japan, the game has become a smash hit. Niantic, the developer behind the game, was quick to explain that this was nothing more than a bug, and that the app only ever had access to basic information, such as a player's name and email address.
Pokemon Go is setting a precedent as the most successful reality game app on the market.
Following the United Kingdom launch of the game, an NSPCC spokesperson told us: "It's deeply troubling that the app's owners have ignored many warning signals and well documented child safety concerns".
Once in charge other players can then head to that gym and try and win control from you.
The game is free to download on iOS and Android but it does contain microtransactions that allow the player to buy in-game items like extra Pokeballs.