The company could be valued as high as $7.6 billion if its initial public offering prices at $24 per share, the upper end of its expected range. That's nearly twice as much as its closest rival Zynga Inc., creator of "FarmVille."
Unlike Zynga, however, King is profitable and has less than a third of Zynga's employee base.
The company is offering 15.5 million shares. Existing shareholders are offering another 6.7 million. King expects proceeds of $326 million from the IPO.
King, based in Dublin, Ireland, generated revenue of $1.88 billion last year. That's more than 10 times its 2012 revenue of $164.4 million.