Doubling down on Facebook games left developer Double Down Interactive playing with house money, as the company announced its move to new headquarters, as well as a staffing expansion.

Peter Anderson, formerly vice president of recruiting and human resources at fellow game developer Big Fish Games, assumed the same role at Double Down.

He will help Double Down fill more than one-dozen openings in areas including programmers in Java, Flash, web, and mobile.

As for Double Down‘s new digs, the developer is moving 52 employees, with space for up to 100 more, to 505 Union Station, near Pioneer Square, in Seattle.

All of these moves will help Double Down Interactive close in on the leading Facebook casino game, Zynga’s Texas HoldEm Poker, which has seen a bit of a decline in players over the past month.

Whether this dip from an all-time-high of over 36.4 million monthly active players to over 38.5 million — is due to seasonal trends rather than dissatisfaction with Texas HoldEm remains to be seen.

DoubleDown Casino claims on its Facebook page that it has almost four million monthly active users (more detailed numbers are unavailable); however, that number spans three games, Poker, Blackjack and Slots.

Meanwhile, DoubleDown‘s Anderson says:

Double Down Interactive is as passionate about its team as it is about the players of DoubleDown Casino. It’s an honor to be working with a leadership team that is equally dedicated to both work and play, and a company culture that reflects this philosophy.