  Within the context of a 3D interactive strategy game, the EViE platform
allows participants to unlock game features using their knowledge and skills in
various thematic areas such as physics, mathematics, etc. By answering
questions organized by Educational Objective in stratified levels of
difficulty, users gather points which grant them access to desired world
elements. Richer world components become increasingly more difficult to access,
so that a players' individual (or cumulative if in a group) knowledge, ability
and / or dexterity is directly reflected by the level of complication of their
virtual world. In the present article we report on the communication
architecture of the platform and focus on framework components that allow group
activities such as cooperation (within the group to facilitate e.g.,
collaboration on more difficult problems), (inter-group) competition as well as
practice and skill honing activities (in single or in multi-player mode).
