The video game developer who hosts The Mid-Season Invitational was established in what year?
Riot Games Riot Games is an American video game developer, publisher, and eSports tournament organizer established in 2006. Their main office is based in West Los Angeles, California. They currently have additional offices located in Berlin, Dublin, Hong Kong, Istanbul, Mexico City, Moscow, New York City, St. Louis, Santiago, São Paulo, Seoul, Shanghai, Singapore, Sydney, Taipei, and Tokyo.
Deck Nine Idol Minds, LLC, since 2017 doing business as Deck Nine, is an American video game developer based in Westminster, Colorado. The studio was founded in March 1997 by Mark Lyons, who currently serves as president and chief technology officer of the company.