Want a FREE Redbox Code?! You can use the code GAMEON at Redbox.com or in the mobile app. This code is taking off a whopping $3 which will make for 2 free DVD rentals. AND, if you’ve used your card before, you can use this code 5 TIMES. If it’s a new card, you can use the code 3 times. Essentially, that means, you could get up to 10 FREE rentals!!