Joystiq
Joystiq News
Last year, Niantic hosted a day-long in Chicago with 20,000 diehard . Unfortunately, it was a disaster, with both the local data networks, and the game's servers, unable to cope with that many players at once. It recovered from that (and ) start to host events in Japan, Korea and Europe, and now it's hoping to maintain that streak this year.
Source:
Console Bang News!