Ecstasy of Order: The Tetris Masters is a 2011 American documentary film that follows the lives of several gamers from around the country as they prepare to compete in the 2010 Classic Tetris World Championship held in Los Angeles, California. It recounts the development and rise of Tetris as one of the most-played video games of all time, the role it has played in shaping the lives of the gamers it chronicles, the mystery surrounding the whereabouts of former Nintendo World Champion Thor Aackerlund, and the conception and execution of the first-ever Classic Tetris World Championship by gaming enthusiast Robin Mihara.

The film was directed by Adam Cornelius and screened at over 15 film festivals both domestic and internationally, beginning with its World Premiere at the Austin Film Festival on October 21, 2011, and including an appearance at the International Documentary Film Festival Amsterdam, the largest film festival of its kind. It debuted on DVD and Video On Demand (VOD) on August 21, 2012. An expanded version of the film's soundtrack from composer Chris Pickolick has also been released.