Seattle-based Big Fish Games announced this morning that it has set the new head of its free-to-play unit, Chris Williams. Williams was most recently at PlayFirst, serving as Vice President of Products & Strategy. He also has served at LucasArts Entertainment. Big Fish announced its move into the free-to-play games segment last week; the company says it will develop free-to-play games on mobile platforms, the PC, and the Mac. The appointment came as Big Fish announced its free, free-to-play game, Found: A Hidden Object Adventure.