This version originally released as a single disc with the expansion add-ons as a download code (later versions of the game included the DLC on a second disc which was included.) DLC which is no longer supported or available.  This would be a collector variant of the game.  

Lock, Load, & Face the Madness! Get ready for the mind-blowing insanity, as one of four trigger-happy mercenaries, taking out everything that stands in your way. With its addictive action, frantic first person shooter combat, massive arsenal of weaponry, RPG elements and four-player co-op, Borderlands is the breakthrough experience that challenges all the conventions of modern shooters. Borderlands places you in the role of a mercenary on the lawless and desolate planet of Pandora, hell bent on finding a legendary stockpile of powerful alien technology known as The Vault.