Ahhh yes... the #1 asked question by everyone. The simple answer is Yes & no, okay maybe a little. It's a relatively soft shelled ball filled with paint, shot from a paintball marker at around 280 feet per second. When hit, it will sting for a second, - we like to compare it to getting snapped with a towel, or a rubber band. But with the adrenaline and excitement of playing, you may not even feel the hit. Covering up bare skin will minimize any pain from being hit. We have surrender rules and referees to keep things safe for all ages. If you do happen to get a welt or two, they usually go away in a day or so.