PopCap games continues to collect smaller developers as the company expands, this time acquiring San Francisco-based ZipZapPlay.

PopCap has been buying up a handful of casual game developers and start-up companies over the last few years, with ZipZapPlay being the company's most recent acquisition.

PopCap Continues to Expand, Purchases ZipZapPlay

ZipZapPlay previously created the Facebook app "Baking Life" before being bought by PopCap. Since 2007, PopCap has also purchased online gaming group SpinTop Games (developers of the Mystery P.I. and Amazing Adventure series) as well as Chicago-based development team Retro 64. ZipZapPlay's purchase gives PopCap a physical base of operations in the Bay Area -- a hotbed of activity for both the games and social media industry -- as well as a bigger foothold in the Facebook-verse.

From the official press release:

SEATTLE, Washington and DUBLIN, Ireland – April 29, 2011 — PopCap Games, the worldwide leader in casual games, today announced that it has signed an agreement to acquire ZipZapPlay, a social games company based in San Francisco, California. With the acquisition, PopCap increases its Facebook games lineup, establishes a social studio in Silicon Valley, and positions itself for further growth and continued success in one of the hottest digital games categories. Financial terms of the acquisition were not disclosed.

"Adding ZipZapPlay’s strong design and development team to our rapidly-growing social games group is a big move for us," said Jason Kapalka, co-founder and Chief Creative Officer at PopCap. "ZipZapPlay is a great cultural fit: a truly creative company that lives and breathes in this space. And their next game is very innovative and exciting – we believe it has the potential to be a step forward in the evolution of social gaming."

"We're elated to join the leading casual games developer and help grow PopCap’s presence in the social arena," said ZipZapPlay’s Bererton. "PopCap’s focus on innovative gameplay and user experience meshes with our own design philosophy. We can't wait to put our heads together with PopCap and start creating the next generation of games for Facebook and other social platforms."

ZipZapPlay will operate as an independent studio in San Francisco headed by Bererton and Pignol and reporting to PopCap VP of Social Games Development Jon David. With the resulting expansion of PopCap's social game development capabilities, the company expects to have four or five games available on Facebook by the end of 2011. PopCap's initial social games, Bejeweled Blitz and Zuma Blitz, already attract a total of approximately five million DAUs (Daily Active Users), making PopCap the third largest Facebook game developer, after Zynga and Electronic Arts.