Collaborative exploration in a multi-scale shared virtual environment

For the 3DUI 2012 contest, we propose a set of metaphors that enable two users to collaborate to find hidden targets in a 3D virtual environment. They are not allowed to communicate by talking or chatting, but only by interacting with shared virtual objects. We propose three solutions to enable one of the users to help the other one to navigate toward targets: displaying direction arrows, lighting up the path to one target, and remotely moving the second user.