Over two million unique users have registered for Sony Online Entertainment’s free-to-play, family-friendly MMO Free Realms.

The PC game has hit the milestone in just one month, with 75 percent of registrants under the age of 17 and 46 percent under 13, while nearly a third of players are female.

"In less than a month, Free Realms has captivated a core player base of tween and teen gamers, while also strongly resonating with MMO gamers," said John Smedley, president of Sony Online Entertainment. "We wanted to create a game to play with our families and are excited to have hit the mark with our intended audience."

While free-to-play, the title also utilises a microtransaction model allowing users to purchase in-game items or to upgrade to a membership status.

Free Realms is also due to be released for PS3 via the PlayStation Network, although no official release date has been confirmed.

Edge recently spoke to Torrie Dorrell, SOE’s senior VP of marketing and sales, and Laura Naviaux Sturr, director of global brand marketing, to discover how online communities don’t like being talked at and why kids are so expensive to put the word to.