Play, within BDSM circles, is any of the wide variety of "kinky" activities.[1] This includes both physical and mental activities, covering a wide range of intensities and levels of social acceptability. The term originated in the BDSM club and party communities, indicating the activities taking place within a scene. It has since extended to the full range of BDSM activities.
Play can take many forms. It ranges from light "getting to know you" sessions where participants discover each other's likes and dislikes to extreme, extended play between committed individuals that know each other's limits and are willing to push or be pushed at their boundaries. While physical activities are better known and more infamous, it also includes 'mental play' such as erotic hypnosis and mind games.
BDSM play is usually the primary topic of negotiation, especially for casual players and limited scenes. Most BDSM clubs and local communities offer classes and materials about negotiating play scenes. Play safety is a major topic of discussion and debate within BDSM communities.