Nickelodeon's Nicktropolis reached a milestone of almost 4 million registered unique users, or "Nicktropolitans," since its launch in late January 2007. The site continues to add new creative content, including its first live action themed world throughout June.

Nicktropolis is a virtual community for kids which provides them with the opportunity to play games, watch videos, explore Nickelodeon-branded and original environments, interact with other kids or Nickelodeon characters in real time, and create their own personalized 3D rooms