Project Wonderland [Mic] is an open source Java programming toolkit for creating collaborative 3D virtual worlds. Apart from the typical functionality of collaborative 3D worlds, Wonderland includes a VoIP solution with the possibility to call land lines and sharing of the live desktop applications and documents. It is sponsored and developed by community developers and Sun Microsystems Laboratories. Project Wonderland, along with realXtend, are two main platforms used by the ImmersiveEducation project [pro] for creating and delivering Game-Based Learning.