As you may or may not know, we're working on our master's thesis at the moment (which is why we haven't been working much on our games). We'll be building a videoconferencing system that makes use of a shared virtual workspace. On this workspace, user's will be able to collaborate and manipulate 3D objects. If the workspace is projected on a desk or a wall or something, a Microsoft Kinect camera will be used to turn the surface into a touchscreen. Here's a video showing what we've done so far: