An annual Pasadena, CA event featuring some of the best YouTube personalities in the universe, free play console games, contests, competitions and guest panels.
socalretrogamingexpo.com
Friday from 10a to 10pm they were conducting "Tetris Qualifiers" for an official 'World Championship"
From their web site:
"SoCal Gaming Expo is an annual video game and esports event that has been taking place since 2015. It is dedicated to celebrating the gaming community's love for all types of games, from retro to modern. Over the years, the show has grown significantly and now takes place in a stunning 80,000 square feet space at the Pasadena Convention Center, located just 10 minutes outside of downtown Los Angeles.
The event features over 200 vendors, gaming tournaments, arcade machines, cosplay, anime, special guests, panels, skateboarding, music, and much more. The organizers' mission is to create an expo that embodies the history and passion of gaming since the early 80s. They aim to commemorate all platforms so that everyone can enjoy the fun."