Key which i have no idea what is for...

it's a DLC but for what game I do not know, could not activate it :(

I don't have the original game

it's something I already have, but don't know what:S

Missing base game. No idea what it is.

tx for borderlands 2 season pass

Steam key redemption system is terrible. Origin's and Desura's is way more useful. They tell you what it's for before you click OK on redeem the code, and in the case of Desura, on used codes, they tell you who used it.

don't have the original game either

Thx for Skyrim DLC.

Damn, even I don't have that game

already have it and still no idea what it was :D, oh steam

These keys were given before P6NII and are no longer valid. That's why it says so. :))