Pellas Nikolaos is a Ph.D. Candidate at the Dept. of Product and Systems Design Engineering, University of the Aegean, in Syros island (Greece). He holds a Master's degree in Education and his thesis proposed an organizational- instructional design framework based on cybernetics theory for the utilization of 3-D virtual worlds. His research interests include the use of 3-D open source virtual worlds as “Metaverse” skins in contemporary instructional formats, specifically for CSCL tasks.