I just tried to register and log-in to the new "Muxlim Pal" virtual world, recently launched in beta. The website explains that Muxlim Pal is "the first Muslim virtual world providing a new kind of family friendly social online environment for your entertainment." It is built on top of the Muxlim social network which has "tens of millions of users" from around the world who contribute to their forums, blogs, video and photo sections, and online polls.
Unfortunately, it looks like they have had to restrict access to Muxlim Pal because of griefers. Here's the message on the site:
We are sorry for the inconvenience. The Muxlim Team
I can't imagine the difficulty of moderating a virtual world populated by Muslims. It must be a magnet for every anti-Muslim bigot with broadband on the planet.