World's most profitable film was made in just Rs 4.5 crore, earned Rs 468 crore, spanned 9 sequels, is regarded among…, name is…

Back in 2004, a movie was made mostly in one room, on a modest budget of $1 million. The smashing success of Saw revolutionised the horror genre, and it spanned a billion-dollar franchise, which went on to earn an honourable mention in the Guinness Book of Wor