Prabhas-led film 'Kalki 2898 AD' which released in theatres worldwide on June 27 in multiple languages, is minting moolah at the box office. The sci-fi thriller directed by Nag Ashwin has already amassed Rs 900 crore worldwide and is inching closer to enter the coveted Rs 1,000 crore club at the global box office. Director Nag Ashwin is elated with the response his film is receiving.