The Great Gambler is an Indian action thriller film, known in Hindi as Sabse Bada Zuari (Hindi: सबसे बड़ा जुआरी), stars Amitabh Bachchan, Zeenat Aman, Neetu Singh and Prem Chopra. It was directed by Shakti Samanta. It did decent business in Mumbai and has attained cult status. This film is a thriller, and its story is based on international gangsters, spies and secret agents of different countries' intelligence agencies and their undercover operations. This film had high production costs with a significant portions of it being shot in international locations including Cairo, Lisbon, Venice and Rome, and in India many scenes were shot in Goa. The Great Gambler has been widely appreciated for its action, direction and cinematography.
Jai (Amitabh Bachchan) is an expert gambler, has been for as long as he can remember, and has never lost a game. These skills bring him to the attention of the underworld don Ratan Das (Madan Puri), who is interested in hiring him to win large amounts of money from rich people and then influencing them into doing whatever he wants. Jai agrees to do so, and plays successfully, though unknowingly to entrap Nath (Jagdish Raj) who works for the government. After losing large amounts of money, he is blackmailed into revealing the blueprints of a top-secret militarylaser weapon that can hit any target within 50 miles and is wanted by another underworld don named Saxena (Utpal Dutt). When the Indian police come to know of this, they assign the case to Inspector Vijay (also Amitabh Bachchan) who is a lookalike of Jai.
Jai and Vijay are both coincidentally sent to Rome where Vijay is sent to retrieve evidence against underworld don Saxena by his former henchman and Jai is onto a money-making scheme where he would marry his rich girlfriend Mala (Neetu Singh) to inherit her money. Mala however meets Vijay at the Rome airport and Vijay decides to go along with this to find out who his lookalike is. Jai meanwhile meets Shabnam (Zeenat Aman), a club dancer who mistakens him for Vijay and was sent by Saxena to stop him on his mission to discover Saxena's plans. It is later revealed that Jai and Vijay are actually long-lost twin brothers and together they team up to stop Saxena from retrieving the laser weapon.
Amitabh Bachchan as Jai/Inspector Vijay (double role)