I am guessing you meant USA. No. In fact, paintball guns are not guns. There referred to as paintball markers.
From what I have heard, no. Paintball guns are not illegal... But I would ask around, I'm not absolutely positive.
There is not licencing for paintball markers.
No.. of course not
No it is not, we have many paintball fields in the area.
no it is not paintball guns are not illegal firearms like other weapons and a paintball guna cant kill you
Paintball is not illegal in Japan. You can play at the related link.
No but you do have to have a gun license that is category A.
At a paintball store
No the are not and they have their own league SAPPA The South Australian Paintball Players association
The markers itself are not, but where you play may be.