Pokemon Go players use their smartphones to "hunt" for and catch Pokemon characters to win points.
The Pokemon Go mobile gaming craze reached European fans on Wednesday, with players in Germany the first to get their hands on the augmented reality sensation.
Many people in the United Kingdom have already been playing the game, thanks to a leaked APK of the Android version being made available and a nifty, if complex trick of swapping between different regional iTunes accounts on iPhone.
This week US senator Al Franken issued an open letter to Niantic, Inc. chief John Hanke requesting answers to a litany of questions Franken has about what data the company's hit augmented-reality mobile game Pokémon Go is collecting from players - especially children.
The huge success of Pokemon Go, a mobile game that has rocketed to the top of Apple Inc and Android app stores in record time, has boosted shares of Japanese video games giant Nintendo.
"We recognize and commend Niantic for quickly responding to these specific concerns, and ask for continued assurance that a fix will be implemented swiftly", said Franken's letter. That Japan and European countries would be able to play the game in "the next few days". There's still no word on when it'll be available in other countries in Europe, but it shouldn't be too far out now.
In the USA, some agencies and a number of smaller retailers have capitalized on the fact their locations are the source of Pokemon Go characters by putting up signs.