Note, only valid online or with the Redbox App. Multiple rentals must be done in individual transactions.
Editor's Notes & Price Research
Please see forum thread for additional discussion/ideas. -qwikwit
Confirmed working on multiple DVDs at the box (one per transaction). Should also work online and for Blu-rays and games.
Expires 12/31/2017 (unless the SD effect kills it).
Credit goes to EDHA. He posted in the OFFICIAL Redbox Free Rental Codes thread as a reply yesterday but hasn't started a separate thread for it.