More than a dozen Hollywood celebs are being sued in connection with a mega-million illegal gambling ring that ran underground poker games including TOBEY MAGUIRE.

Ex-Spider-Man, MAGUIRE, 35, won more than $300,000 from a Beverly Hills hedge fund manager who embezzled investor funds , orchestrating a Ponzi scheme to pay off his monster debt to the star and others, RadarOnline.com reports.

An FBI investigation into Brad Ruderman, the CEO of Ruderman Capital Partners, uncovered how he lost $25 million of investor’s money in covert poker games held  in suites at the Beverly Hills hotel, Four Seasons, and the Viper Room on Sunset Boulevard.

Tinsel town A-listers Leonardo DiCaprio, Ben Affleck and Matt Damon reportedly also played in the no-limit Texas Hold 'em games which had a buy-in of $100,000.

Other secret society high rollers facing hefty lawsuits include billionaire businessman Alex Gores, The Notebook director Nick Cassavetes, Welcome Back, Kotter star Gabe Kaplan, Paris Hilton's sex tape partner, Rick Salomon, among others.

Ruderman who was  convicted on two counts of wire fraud and two counts of investment adviser fraud remains in a Texas jail until 2018.

 Lawyers for the clients whose funds Ruderman embezzled are filing a series of civil suits against those who won big in the illegal poker dens, hoping to recoup some of their lost savings.

Neither DiCaprio, Affleck nor Damon are being sued.

DOCUMENTS: Tobey Maguire Sued Over Illegal Poker Game