Redbox: Rent 2 Movies, Get 1 FREE May 31, 2011 This post may contain a link to an affiliate. See my disclosure policy for more information. Redbox has a new Summer Fun and Games promotion available! Through June 12th, when you rent 2 movies at the same time, you’ll be emailed a code for a FREE one night DVD rental. The code must be used within 72 hours.