That video game was Ingress, the augmented reality game that makes battlegrounds from real world locations.
People take this shit seriously.
People traveled from as far flung as Germany to take place in this event.
Roughly 1000 people turned up to take part in a massive battle within the game. Apparently the Enlightened faction beat out the Resistance to increase their lead to 17-7 in a large scale battle that has been taking place at major landmarks all over the world. I have no idea what any of this means but it sure sounds impressive.
In case you're not aware, the technology under the hood of Ingress is the same tech that Niantic is using to create Pokemon Go. It uses GPS technology to integrate real world locations with the game itself, which is precisely what Pokemon Go will do.
And as popular as Ingress is, can you even imagine the crowd that would come if this was Pokemon Go? Imagine if they gave away Mew or some shit for one hour only, at this precise location.
The Opera House wouldn't be big enough. Seriously. Chaos.