PopCap Games has announced its acquisition of Vancouver-based SpinTop Games (Mystery Solitaire, Mahjong Escape), expanding the publisher's network of casual developers and portfolio of titles, following the similar acquisition of Illinois-based developer Retro64. According to PopCap, SpinTop's portal will add millions of customers, SpinTop's Vancouver studio, first founded in 2004, and more than 250 downloadable games to PopCap's roster. As with PopCap's recent Retro64 acquisition, SpinTop execs Duncan Magee and Craig Hamilton will continue to manage the company as a PopCap subsidiary, and the combined PopCap-SpinTop network will be jointly presented to advertisers as a single network buy. Financial details of the acquisition were not disclosed. "We're happy to be adding SpinTop's strong roster of casual games, a Vancouver studio and a direct-to-consumer portal to our existing business," said PopCap CEO David Roberts. "The acquisition provides new publishing opportunities for SpinTop's games, and strengthens a distribution partnership we established with SpinTop last year."