Double Down Interactive's Glenn Walcott and Greg Enell have added more than 65 employees this year.

Executives at Double Down Interactive hired a mariachi band to entertain staffers at a company meeting in September — a special treat for hitting one million daily active users on Facebook.

And then — amid the tortilla chips and margaritas — the fun really started. CEO and co-founder Greg Enell — along with execs Glenn Walcott and Cooper DuBois — announced that they were taking the entire staff (and their significant others) to Mexico next March to celebrate the achievement.

And that’s not the only perk at Double Down, which allows unlimited employee vacation; pays for weekly massages; and presents a bottle of Dom Perignon to each new hire.

It’s been that kind of year Double Down, a Seattle maker of casino-style social media games.

Under the guidance of Enell and Walcott, Double Down has expanded fast. It just moved into new offices at Seattle’s Union Station, in part to accomodate a growing staff that has mushroomed from 16 to more than 80 this year.

The company’s DoubleDown Casino game now attracts 1.3 million players each day on Facebook, up from 70,000 at the beginning of the year. The game, which includes 19 different casino-style offerings but no actual betting, is now one of the 20 most popular games on Facebook.

“2011 was an incredibly productive year for Double Down Interactive,” Walcott tells GeekWire. “We’ve grown on all fronts, clearly establishing ourselves as the world’s most popular casino.”

Up next? Double Down is working on new slot-style and poker games and plans to expand to tablets, smartphones and “smart TVs.”

“With all this activity, we expect to grow our daily player base beyond three million, while extending our monthly players beyond 10 million,” says Walcott

Watch out, Vegas.

Newsmakers at the GeekWire Gala

We’ll be recognizing more than 20 Newsmakers of 2011 during the GeekWire Gala, Dec. 8 at the Great Hall at Seattle’s Union Station. We’ll introduce a new Newsmaker every weekday leading up to the big event.

The night is also a celebration of “Geeks who Give Back,” recognized in a special GeekWire 2012 Calendar that will be given to attendees, with a share of sponsorship proceeds going to the Child’s Play charity.

IMPORTANT NOTE: The event is now sold out. If you’ve already signed up, we’re looking forward to seeing you there! See the registration page for details and logistics.

Thanks to our sponsors Zillow, Bing, Filter, Facebook, thePlatform and Barokas PR for helping to make this special evening possible.

Contact Rebecca Lovell, rebecca@geekwire.com, for sponsorship opportunities.

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