StarCraft II shoutcaster Sean "Day[9]" Plott has formed the After Hours Gaming League, which will see some of the most high-profile tech companies in the world face off in an eight-team tournament. The idea came from an in-house StarCraft II tournament at Facebook to which Plott was invited, after which Facebook suggested it be expanded to include other companies. Amazon, Dropbox, Google, Microsoft, Twitter, Yelp and Zynga are all on board, with the $5,000 grand prize donated to the winner's chosen charity. The tournament began on July 5, and the grand final, at Facebook's Palo Alto campus on August 19, will be streamed live on Justin.tv, Day9.tv, and Facebook Live.