We never state that there was a sex game the sex game is refered to twice  once Judge Micheli who conducted the hearing on the indictment of Knox and Sollecito dismissed as fantasy prosecutor Migninis claims that the sex game in which Kercher is alleged to have died was inspired by Satanic rites Halloween rituals or violent Japanese manga comics about dead vampires and once Subsequently at the commencement of the trial prosecutor Mignini presented a theory that the murder was motivated by a sex game turned violent Neither of these statements state that the game happened  in one the allegation is dismissed as fantasy by a judge and in the other it is put in the mouth of the person who said it