King is planning to make an initial public offering on Nasdaq next year. The company, which started out making games for consoles, only moved into Facebook games in April 2011, but its launches such as Bubble Witch Saga now attract over 50m users a month via the social network – ranking it second only to Zynga in terms of popularity.
Riccard Zacconi, chief executive of King.com said it has been “nicely profitable” since 2005 and has a strong balance sheet, but that it is eyeing a flotation to fund the next stage of its growth. Its backers, private equity firms Apax and Index Ventures, are also seeking an exit.
King is headquartered in London and most development is done in Stockholm.