Pandora's Box is a mysterious door with a golden ? mark on it that is found in the HOH room on occasion, making its first appearances in Big Brother during season 11. This borrows from the Greek myth of a box that contained all the evils in the world disguised as something good. If opened, the evils would be unleashed upon the world, but possibly bring something good with it as well. This holds true in Big Brother, for when the Box is opened, it unleashes something good onto to Head of Household and treacherous unto the House, or something good onto the house and something bad for the HOH.
|Season||For the HOH||For the House||Opened By|
|11||Locked in the Box with a TV to watch the houseguests.||Money fell from the sky for them to collect. Kevin would not be released until the houseguests let him out.|
|11||Spent time with her boyfriend, who proposed to her. She had to forfeit her spot in the POV competition.||The House was tormented by costumed guests.|
|12||Granted the Diamond Power of Veto to be used at either of the next two evictions. He used the veto on himself when him and Lane Elenburg were on the block, Kathy was the replacement nominee.||Unleashed the The Saboteur 2.0 into the house.|
|12||Granted a spa retrieve, complete with a massage, access to the pool and other facilities, and a relaxing day in paradise.||Unleashed Juror Rachel Reilly into the House for 24 hours.|
|12||Locked in the Box with previous BB10 and BB11 houseguest Jessie Godderz, who forced her to work out, all the while boasting about himself, under the pretense of getting game advice.||Enjoyed a Hawaiian luau.|
|12||Had to choose envelopes from a tree. Each envelope had a different amount inside, with a maximum amount of $10,000. Lane chose three envelopes totaling $91.17.|| The house received a punishment for every envelope Lane opened.|
#1 Cutlery and cups were taken away.
#2 Wearing Puppets and making them speak when the wearer speaks or risk becoming a Have Not
#3 Dancing to music every hour or risk becoming a Have Not
|13||Earned $5000 along with chosen houseguest and now partner duo, Kalia.||The game returned back to the duos twist for one week with Porsche and Kalia, Rachel and Jordan and Adam and Shelly becoming duo partners.|
|13||Locked in the Box with previous BB10 and BB11 houseguest Jessie Godderz, who acted as a salesperson who gave her anything that delt with himself.||Tori Spelling entered the house and gave all the houseguests a 3:00 minute shopping spree.|
|14||Earned money (up to $3,000).||Unleashed quarters throughout the Big Brother House to operate the crane game, which contained a Golden Ball of Veto. Ian Terry received the ball, and had to forfeit playing in that round's POV as he had just won a Veto.|
|14||Released small presents throughout the house (including a new hammock in the backyard)||Released BB10/BB11 House Guest Jessie Godderz into the house where he replaced all the food with health food.|
|14||Watched a video made by BB12 and BB13 House Guest Rachel Reilly, in which she gave him useless advice on how to win the game.||Received video messages from home.|
- Thus far, Ian Terry is the only House Guest to open two boxes in the same season.
- So far, Ian Terry has opened the most boxes overall with 2.
- Thus far, no one has passed up opening the box.
- Season 15 is the first to not feature Pandora's Box since the twist started.
- This twist has since been retired, following its absence from Season 15 onward.