A unique part of Ninja Volleyball is the ability to jump off the net and use your jumps and dashes to guard the ball on the opposite side of the court. This has a risk / reward factor to it, putting more pressure on the opponent, but leaving your own side vulnerable if the opponent is able to return it.
In this example above, the green player on top the net is guarding the ball on the red side of the court.
Eventually, their pressure on the red team opens up an opportunity for a spike, which finishes off the point.
Serve Guarding
Another opportunity to guard the ball is during a serve. A player from the opposing team of the server may attempt to hit the ball back for a quick attack off the serve, but must do so behind the service line ( the dotted line at mid court ). If done successfully, the quick momentum shift can be enough to put the serving team on the defensive, if not win the point out right.
Above, the yellow player sets up their position on the net, then times their serve guard perfectly to catch the serving team off guard, winning the point.