Saw

The 2004 American horror film directed by James Wan is one of the most profitable horror films ever, grossing over $100 million worldwide. Saw tells the story of a mysterious serial killer named Jigsaw, who tests his victims by forcing them to play deadly “games.”

Source: LoanSocieties

Saw was never expected to do well, had a small budget, and was shot in only 18 days. However, what was supposed to be a minor release turned into a decade-long franchise that spans multiple movies and is a must-watch for any horror film fan.