New Delhi, Oct. 22 -- Bollywood sequels can turn familiar film titles into much bigger businesses. Dhurandhar 2, Stree 2 and Gadar 2 show how follow-ups can expand worldwide collections.

The business attraction is the potential to earn more from an existing film series. Bigger collections across India and overseas offer a financial argument for returning to familiar titles.

An established title can support hopes of higher collections across several film releases. The figures also show why repeating a title cannot promise the same financial outcome.

Dhurandhar 2: The Revenge collected Rs.1,813.39 crore worldwide, against Dhurandhar's Rs.1,307.35 crore. That represents an increase of Rs.506.04 crore. Its overseas collections reached Rs.4...