SR0 for E3.

The Electronic Entertainment Expo, the video game industry extravaganza in May and among the biggest trade shows in Los Angeles, has sold out the five exhibit halls of the Los Angeles Convention Center 

"We've sold every available inch," said Mary Dolaher, show director and vice president of the E3Expo. "I'm not sure we could fit any more if we tried."

About 435 companies have booked exhibit space, taking up 540,000 square feet at $23 per square foot. That's the largest amount of space sold at the convention center in four years.

Dolaher said exhibitors are increasing their space this year, some even taking up two booths. "It's a reflection of continued growth in the industry," Dolaher said. The pending release of the next generation of game consoles has something do with it, too.

Dolaher said about 17 percent of the roughly 65,000 conferences attendees are expected to be from overseas, higher than in past years, which she attributes to the emergence of overseas markets in the video gaming space.

Though the Convention Center has had trouble attracting large groups, E3Expo has booked the center through 2012. Dolaher said Los Angeles is the optimal city for the expo because of the convergence of Hollywood and entertainment with videogame production.