Right now you can use codes: ABTS25 and SNSV25 to get a free rental at any Redbox location. These can be used once per debit/credit card, so you can rent more than one for free by using different cards! Expiration date is unknown.
It appears the codes above are no longer working but that these codes are: RBX2NITE and FREE45W. Sorry, guys. Looks like these codes are no longer working as well. The codes listed below are still good, however!
To use the code, select ‘Rent with Promo Code’ before selecting your movie.
Don’t forget that you can also use codes DVDONME, BREAKROOM, and DVDATWAG (Walgreens only) once per debit/credit card to score a free movie as well. If you live near a Giant PA, read here how you can get a free rental code.