3D virtual spaces and avatar provider IMVU has come out of stealth mode to announce that its platform has reached 20 million registered users and currently offers 1.5 million items in its virtual goods avatar.

The IMVU platform offers a wide range of features, including virtual rooms, personalized avatar home pages, a 3D messenger, a virtual goods catalog, groups, forums, developer tools, and interactive games.

Founded over four years ago, IMVU has expanded its community primarily through viral growth. According to VC firm Menlo Ventures, IMVU generates $1 million in revenue per month through its micro-payments economy. The service offers virtual credits which users can purchase and spend on user-created goods.

Said IMVU CEO Cary Rosenzweig: “Today’s announcement is dedicated to the wonderfully creative IMVU community of developers and members who want to express their unique selves using 3D avatars. The developers are a passionate part of the community and their creations inspire other members to express themselves in incredibly unique ways. I personally have great fun interacting with such a vibrant and growing community.”