Head Games: The Global Concussion Crisis is an expanded version of Head Games (2012), a 2012 documentary film that examines the effects of repeated concussions and subconcussive blows, particularly those associated with sports. It focuses on American football and hockey, but also covers boxing, soccer, lacrosse, and professional wrestling. It covers findings that chronic traumatic brain injury is occurring in female sports. Also covered is physiological evidence of brain injury in adolescent athletes.