On zurro ball there is a way to get 3000 np a day! Ok the best way is well first of all if u click the little N on the spinning zurro guy u can use him and hes he best under my opinion for my trick. Metal ball works but im not used to it. Ok what u do is u let the grundo (or what ever your useing)let it get close enough to the ground that u here a little *DING* then click the zurro ball and uve done a grounder worth 10 points each! u should kinda click the ball on its way down to slow it from going to fast u cant click the ball in time and it hits the ground. try to do about 10 grounders then cross the red line for 100 points! get 500 points and it doubles to 1000np! but u can only get up to 1000 np not over sadly enough...reply me if u put this up and it works 3000 np a day is very useful!