#5: Paranormal Activity (2007)
Prepare to be spooked not just by the film but by its jaw-dropping success. In 2007, Oren Peli shot Paranormal Activity in just one week using a handheld camera and a shoestring budget of only $15,000. With its found-footage style and eerie realism, the supernatural thriller tapped into viewers’ deepest fears.

What began as a tiny indie project soon spiraled into a global phenomenon, terrifying audiences worldwide and generating over $193 million at the box office. Its staggering profit margin made it one of the most successful independent films ever, launching a franchise and redefining modern horror on a budget.
