X Games

The rise of eSports

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Dota 2

Photograph By Suzi Pratt/FilmMagic

A sold-out audience fill the seats of KeyArena for The International Dota 2 Championships in July in Seattle, Washington. "Dota 2," a free-to-play team strategy game, used millions of micropayments to fund a $10.2 million prize pool for the tournament -- a bigger purse than the 2014 PGA Championship.