In parallel to increased autonomy of students in their learning, teachers seemed to have transformed roles in these game-based learning
environments. Since students participated in the learning activities almost independent of the teacher and in a self-paced mode, the role of
the teachers became guide and manager rather than lecturer. The most frequently reported aspect of rich learning environments is the
flexibility they provide to students in terms of studying at their own pace (Mayer, 2001). Another natural implication of this transformation
is the rich interaction and collaboration opportunities forming among students both in-game and within the physical environment.