By Raju Mudhar Staff Reporter Wed., June 13, 2018 LOS ANGELES—While the Electronic Entertainment Expo here is all about new game announcements and demonstrations, the biggest game in the world is doing things a little differently to help keep its incredible momentum going. For the first-ever “Fortnite Celebrity Pro-Am” held Tuesday evening at E3, more than 3,000 spectators filled the Banc of California Stadium to watch 50 celebrities, including actors, musicians and athletes, partnered up with 50 professional players/streamers/content creators for a glitzy videogame tournament. “This is absolutely bonkers — they don’t do this for NBA 2K,” said Terrence Ross, a former Toronto Raptor who now plays for the Orlando Magic, prior to the competition. “It’s so crazy, you hate when people watch you play games, but literally that’s what’s selling it and that’s what brings everybody out here watching, so we can play against each other. Ten to 15 years ago, you would think that’s absurd, but now it’s a reality and it’s a really big event. I’m just blessed to be a part of it.” Up for grabs, besides bragging rights, was a $3 million prize pool for charity. It was probably the best demonstration so far of…