Big Brother 18

Big Brother 18 is the eighteenth season of the popular American reality television series Big Brother.

Twists

 * Returning Players: Four fan-favorite HouseGuests from past seasons returned to compete against twelve new HouseGuests.
 * Teams Similar to the Cliques and Coaches, HouseGuests divided into teams of four with one returning HouseGuest on each team. Each week, the Head of Household's teammates were safe from eviction.
 * Day Two Eviction On Day 1, Julie revealed that the loser of the last round in the Hit The Road Competition would be the first evicted from the season.
 * Roadkill Competition: Each week the HouseGuests competed in the Roadkill Competition. The winner of this competition was privately informed of their victory and received the power to name a third nominee for eviction anonymously. If the POV winner took the "Roadkill Nominee" off of the block, the Roadkill winner would secretly name a replacement nominee.
 * Battle Back Competition The first five evicted HouseGuests competed against each other for the opportunity to re-enter the house.
 * Round Trip Ticket: During Week 5, shortly after the Veto ceremony, the HouseGuests learned there were clues to a puzzle around the house. A phone booth upstairs led to a secret room if a HouseGuest could crack the code to unlock it. Paul Abrahamian was the first HouseGuest to crack the code and gain entry to the secret "Paris" room. There, he discovered twelve envelopes. One envelope contained a "Round Trip Ticket" permitting the person who unknowingly claimed it to re-enter the house upon their eviction immediately. Each HouseGuest claimed one envelope. Julie Chen was the only one permitted to open these envelopes; if a HouseGuest opened their envelope before eviction night, its contents would be void. After four weeks, the tickets expired. None of the HouseGuests evicted during this period had the Round Trip Ticket, so the rest of the HouseGuests opened their envelopes. Paul, coincidentally the HouseGuest who discovered the twist, was the holder of the Round Trip Ticket.
 * America's Care Package: At the beginning of Week 6, Julie introduced America's Care Package. This twist allowed the viewers to vote for one HouseGuest to receive a special advantage within the game each week. Once a HouseGuest received a Care Package, he/she was not eligible to receive another in the future.
 * Jury Re-Entry Competition Following Week 9's eviction, the five jurors and the remaining HouseGuests competed in an endurance Head of Household competition. The last juror standing won the right to return to the house, and the last HouseGuest standing (jurors included) became the next Head of Household. Victor won re-entry for the second time in the season. It is the first season in Big Brother history to feature two re-entry competitions and the first season in which a HouseGuest re-entered the house twice.