Paranormal Activity is coming to DVD and Blu-Ray soon – look for the low budget horror flick on December 29.

Paranormal Activity cost less than $15,000 to make – but ended up grossing $106.1 million in theaters, mainly due to word of mouth and social networking marketing.

Paranormal Activity’s DVD and Blu-ray will have both the original theatrical version of the film as well as an Unrated Version with an alternate ending.