A Pakistani hacker who previously made headlines earlier this year for selling almost a billion user records stolen from nearly 45 popular online services has now claimed to have hacked the popular mobile social game company Zynga Inc.

With a current market capitalization of over $5 billion, Zynga is one of the world’s most successful social game developers with a collection of hit online games—including FarmVille, Words With Friends, Zynga Poker, Mafia Wars, and Café World—with over a billion players worldwide.

Going by the online alias Gnosticplayers, the serial hacker told The Hacker News that this time, he managed to breach “Words With Friends,” a popular Zynga-developed word puzzle game, and unauthorisedly access a massive database of more than 218 million users.