This is simple and fun game for players in the earliest stages of learning how to play - specifically players who have not yet developed competent rallying skills. It teaches them how to attack and defend territory and gives them practice executing volleyballs skills from their own toss.
This one vs one mini game is a great change-up from pepper-type drills at the start of practice. It will get your players moving at the start of practice, warm-up/improve their basic skills, and help them to learn to employ simple scoring tactics.