It's freebie time!
To sign up, you'll need to head to the Earn Rewards website and create a new account, after which you "will have the opportunity to redeem a free Halo 5: Guardians game download."
As expected, this deal already appears to be highly popular and is occasionally crashing the website and causing error messages, so keep trying. We're not expecting these codes to stick around for long!
Have you managed to grab a free copy of Halo 5? Let us know in the comments.