Zynga, one of the world's largest developers of social games, is offering one of the most popular Facebook applications, free Texas Holdem, with over 12 million active users each month.

Following the announcement of its partnership with WSOP, Zynga will host several tournaments on the Facebook application that will give two winners the chance to make it to the Main Event of the World Series of Poker, the biggest tournament in world poker.

"We know that poker is a lifestyle which includes playing online and offline, and watching it on TV. This partnership is an opportunity to bring those worlds together" said Zynga CEO Mark Pincus.

The prize includes roundtrip airfare to Las Vegas and three nights' accommodation at the Rio All Suite Hotel and Casino, as well as a backstage tour of the WSOP venue and pass to the VIP player's lounge.