If you pre-order Borderlands: The Pre-Sequel, you will receive free access to the Shock Drop Slaughter Pit. Now you might be asking yourself what exactly is The Shock Drop, well luckily I have a video right here for you!
Borderlands: The Pre-Sequel is set between the events of Borderlands and Borderlands 2 as you take on the role of four new Vault Hunters: Athena the Gladiator, Wilhelm the Enforcer, Nisha the Lawbringer, and everyone’s favorite Claptrap the Fragtrap as they fight along side Handsome Jack. Players will be able to witness his transformation into the monster that all of us loved to hate.  Fans of the series might also be familiar with Athena, Wilhelm and Nisha as they were bosses in Borderlands 2.
As a thank you, Gearbox has also given out some SHiFT Codes for some golden keys.
Borderlands 2 SHiFT Codes:
Xbox 360: K35TJ-6395F-TXFBX-56TJB-ZZ33S
PlayStation 3: K35TJ-6399B-XZBCT-93WJB-ZZ35K
PC/Mac: CJKT3-WRK9S-6TJ33-JJJJJ-5XJZZ
They were also nice enough to give out SHiFT Codes for Borderlands: The Pre-Sequel.
Borderlands: The Pre-Sequel SHiFT Codes:
Xbox 360: KKK3J-T66J3-FZH3X-KFJJ3-JSF6R
PlayStation 3: KKK3J-T66R6-HTF5T-SBKJ3-JSFRJ
PC/Mac/Linux: KKK3J-T66R5-BXC3T-JBJJ3-JSF9T
Make sure you use the Borderlands: The Pre-Sequel keys as soon as possible since they are only good for seven days after its release. Borderlands: The Pre-Sequel will be hitting store shelves on October 14th in North America, and worldwide on October 17th.
