Fig. 2.

Three exercises developed for the VERGE system. First-person view of the user (client) is shown for each exercise. The inset image shows the corresponding third-person server view. a Ball Bump. Users pass a ball back and forth across the Table. b Food Fight. Players pick up food items and throw them at each other. c Trajectory Trace. One player draws a trajectory in space; another player must retrace the trajectory to erase it