So why should you care? Because the company could rival -- or handily best -- publishing contemporaries like Activision, EA, and Take-Two. The social game publisher's last valuation pegged it at a cool $10 billion, a number All Things D's Kara Swisher believes could climb even higher for an IPO. For comparison's sake, the largest public game publisher, Activision Blizzard, is valued at $13.07 billion as of mid-day today ... and that includes the Call of Duty series and World of Warcraft.
With a $10 billion IPO, Zynga would become the second largest game publisher in North America, eclipsing EA's current valuation of $7.81 billion. Zynga reps declined to comment.