'Kalki 2898 AD' hit the theatres worldwide on June 27. Led by Prabhas, the sci-fi thriller boasts of a stellar cast including Amitabh Bachchan, Deepika Padukone and Kamal Haasan. The Nag Ashwin directorial took a mammoth opening at the box office and has scripted history by becoming the third biggest opener in Indian cinema as it has earned Rs 180 crore worldwide according to early estimates by industry tracker Sacnilk.com.