Expanding on the original game, Borderlands 2's gun system can create millions of different computer-generated weapons, as well as shields and equipment enhancements. Non-player characters are more expressive, and quest outcomes have more influence on the game world. In addition to the dusty, desert settings of the first adventure, the sequel visits a number of new Pandora environments, including the merciless frozen tundra where the revenge-driven plotline begins. Online, over a local network, or in split screen, the game's co-op mode allows a second player to freely join and drop out of a game in session.
The "Deluxe Vault Hunter's Collectors Edition" offers players the full game, an authentic Marcus Kincaid bobblehead doll, a hardbound art book, a set of four collectible stickers, a map of Pandora, and DLC including a digital comic.