 The VSC system was voluntary at this point, though most UK retailers would respect the ratings marked on boxes to avoid selling mature games to children.The only facet of the UK ratings system for video games set in law were for titles deemed to have excessive violent or pornographic content; such titles were required to be reviewed by the British Board of Film Classification (BBFC), a non-government body designed in law to review film and television content, if such a designation was determined by the VSC.Legal penalties existed for publishers and retailers that attempted to sell such games without the BBFC's review.