‘Demon Slayer: Mugen Train’ overtakes ‘Mortal Kombat’ a the box office with $6.4 million weekend Monday, May 3 by ABC NewsDemon Slayer: Mugen Train exacted its revenge on last week's champ, Mortal Kombat, overtaking the martial arts fantasy with an estimated $6.4 million weekend. That brings the Demon Slayer's domestic gross to $34.1 million after two weeks -- making it the third-highest-grossing anime film of all time... Read More.