Today, the 26-year-old coordinates a team of 20 lawyers at Sheppard, Mullin, Richter & Hampton that tackles mergers, licensing contracts and other deals that help make the burgeoning game business hum.
"I'm pursuing my lifelong dream of combining the two things I love -- games and law," Foust said.
Never a group to steer clear of the action, lawyers across California are retooling their entertainment practices to cater to the game industry. Video games are expected to generate nearly $50 billion in global revenue this year, despite a slowdown in consumer spending, and sales have already surpassed old-line businesses including music.
As the game industry grows, so do its legal needs.
"There's tax work, litigation, risk management, immigration, labor -- the list goes on and on," said Seth Steinberg, who last year left his position as general counsel of George Lucas' video game publisher, LucasArts, to start a private practice in San Francisco specializing in the game industry.
Other firms have joined in.
Greenberg Glusker Fields Claman & Machtinger, the law firm of record for the likes of Tom Cruise and Warren Beatty, has cultivated a game practice led by Stephen Smith and Suann MacIsaac.
"We looked for areas where our core expertise in entertainment law could be applied," said Jonathan Fitzgarrald, a spokesman for the Century City firm.
"And we found that video games in many ways represented the future of the entertainment industry."
For Greenberg Glusker, billings from game-industry clients quickly sprouted from nothing to millions of dollars a year.
The firm's first big case came in 2004, when one of its clients, Ubisoft Entertainment, was sued by MGA Entertainment Inc., the Van Nuys maker of Bratz dolls and toys. MGA sought to revoke a license it had granted Ubisoft to make games based on the Bratz franchise.
The game publisher countersued and won an arbitration award of more than $13 million in damages, including $2.5 million in attorney fees.
The increasing sophistication of video games and game consoles has generated technical problems, and class-action lawyers have jumped in to pursue claims on behalf of consumers.
Microsoft Corp. has been hit by several suits for flaws in its Xbox 360 game console that cause the device to crash. Activision Inc. was sued because its Guitar Hero III game for the Wii game console allegedly did not feature surround sound as its packaging claimed. Electronic Arts Inc. was targeted for the copy-protection technology on its Spore game.
"For a long time, video games flew under the radar," Foust said. "That's no longer the case. The number of consumer class-action lawsuits filed against game companies has gone up pretty dramatically over the last three or four years. The pot [of] money is now big enough for plaintiffs attorneys to become interested."
In that sense, the game industry now faces the same issues as other complex global businesses. But lawyers who are developing specialties in the field say game industry work has unique aspects, knowledge of which they can promote to prospective clients.
For example, game companies routinely stage critiques at the end of every major game project. These postmortems, meant to improve future games, are brutally frank in pointing out the flaws of even successful titles.
But in contract disputes, the notes from these critiques can be used to assign blame, said MacIsaac of Greenberg Glusker.