What does TREG mean?

Training in Requirements Engineering Game (TREG) is a game that simulates various activities in software requirements workshop. The trainee interacts with Non-Player Characters and according to the trainee’s choice the game reenacts a specific scenario.
The social simulation in the game is based on the branching stories genre. Each branching node is described using a scenario-based template. The dynamical perspective is modeled using State Machine Diagrams.
The game was prototyped in Second Life, a virtual world that gives the possibility to create an immersive collaborative educational experience.