Moshi Monsters has reached an impressive milestone of some 50 million registered users worldwide, according to company statements.

Moshi Monsters is a social game aimed at children between 6 and 12. It lets them “adopt” what amounts to “virtual pets,” visit a “virtual land” called “Monstro City,” earn “virtual currency,” and communicate with their peers in safe, online environment.

“Players choose from one of six virtual pet monsters - Furi, Poppet, Diavlo, Zommer, Luvli and Katsuma - that they can create, name and nurture. Once their pet has been customized, players can navigate their way around Monstro City, taking the daily puzzle challenge to earn 'Rox' (virtual currency), playing games, solving Super Moshi Missions, personalizing their room, showing off their artwork, reading stories and communicating with friends in a safe environment,” says the company press release.

A recent study by AVG revealed that 92% of children in the United States “have an online presence by the time they are two, compared to 73% in western Europe,” Mashable reports.

"North America is a huge growth area for us right now," Michael Acton Smith, CEO and creator of Moshi Monsters, recently said in a statement carried by TechZone360.

It has 15 million registered users in North America alone, according to TechZone360.

"We're delighted to hit 50 million registered users and have even more ambitious plans ahead. Our vision is to build the largest entertainment brand in the world for this new digital generation of kids," Smith added.

The website is at the center of the brand.

The franchise has already or will soon feature toys, as well as such complimentary items as books, video games, trading cards and a Moshi magazine. Moshi will have related music, live tours, TV and movies, according to company statements.

Moshi was founded by Mind Candy, which is based in London.

Mind Candy came close to bankruptcy in 2008. It is now expecting to raise over $100 million in gross retail sales with all Moshi Monsters-related products in 2011, TechZone360 reports.