PopCap announces that Plants vs. Zombies is now available for Windows and Macintosh at several retail outlets after three months of availability online. The press release outlines current availability at Wal-Mart, Best Buy, Target, Apple Stores, and Amazon.com, and says the game will also come to Sam’s Club, OfficeMax and Office Depot in October. They also outline plans to bring the RTS game to iPhone and iPod Touch around the end of this year, though no further details are offered at this time.