Normally I get a free movie rental code once per month, and then it's only good for the day you receive it. This one is for a free (one day) game rental, and it expires on 9/7, so you have a few days. The codes are unique (or at least it says they can't be shared). I'm not sure if signing up to the service now will get you the code or not, but it's worth a try? Send REDBOX to 727272 to sign up.