CJ5JB-ZKSTK-KTF3S-3BJ3B-XCSRC
Kudos to Dealbot for the notification on this one. Great if you're in Victoria and locked in for the next week. Using the link above will take you to the SHiFT front page, you need to be logged in to redeem the codes.
CJ5JB-ZKSTK-KTF3S-3BJ3B-XCSRC (BORDERLANDS 1) - expires 17 June, 1pm
53CJJ-FWS3W-WTXTS-TJBB3-CHFT3 (BORDERLANDS 1) - expires 16 June, 2pm
You don't need to own the game to redeem the keys. These are not codes to unlock the game, they're only for unlocking chests to receive special loot.
If you're already logged into to SHiFT the direct link to redeem is https://shift.gearboxsoftware.com/rewards, or redeem through your respective platform (multiple redemptions possible this way).