Big Brother 18 (American season)

The HGs went outside to form four teams, each headed by a returnee. Julie Chen told the teams about a second twist: they would compete in four competitions. The winning team of each game would be safe and exempt from the next one. The last team remaining would compete against each other as individuals. The loser of the final part would be evicted. The remaining three would then decide among themselves which of their own would be the first Head of Household (HoH).

• Immunity Competition ("Ride the Rocket"): Each team must climb onto their rocket and stay on for as long as possible. The team that is eliminated first lands in "Notburg" and is Have-Nots for the week. The second team to fall goes to "Mystery Land" and receives a mystery punishment. The third team lands in "Cash City" and gets $10,000 to split. The last team lands in "Safeville," guaranteeing their safety for the next two evictions.

Big Sister became Have-Nots, Category 4 went to Mystery Land, and the Freakazoids received $10,000. Team Unicorn received immunity for two evictions. The three remaining teams then battled in a three-part competition called Hit the Road (HtR).

• Hit The Road, Part 1: Three members of each team hold three ropes tied to a ring that supports a beam. The free members dig in the sand for a block, place it on the shaft, and switch out with a teammate. If a block falls, they must start over. The first team to stack a fifteen-block castle on their beam and hit their buzzer wins.

Category 4 won and were immune from eviction and exempted from the succeeding parts.

• Hit The Road, Part 2: Teams must complete a three-dimensional, multi-tiered sandcastle puzzle. The first team to finish their sandcastle and step in a designated area wins.

Big Sister won. They were immune from eviction and exempted from the final part in which the Freakazoids went head-to-head.

• Hit The Road, Part 3: Each member of the team stands on a tilting island-like platform. Each climbs a palm tree, grabs a coconut, and places it in one of the designated holes that spells "SOS." The last member to fill the holes and grab the flag is evicted.

Nicole finished first, with Tiffany second and Corey edging out Glenn when the latter displaced some of his coconuts upon grabbing his flag. Glenn lost and was evicted immediately. The remaining members of the Freakazoids decided Nicole should be HoH, to the dismay of the other newbies, who originally planned to get rid of the returnees early in the game. As HoH, Nicole considered Da'Vonne's advice and targeted Jozea, whom Da'Vonne felt was leading the returnee revolt. She nominated Jozea and Paulie for eviction, with Paulie agreeing to go up as a pawn. To gain the numbers, the returnees pulled in newbies Zakiyah, Michelle, Corey, and Tiffany to form the "8 Pack" alliance. Julie then informed the HGs of a twist called the "BB Roadkill" competition.

• Roadkill ("Take It Off"): Each of the HGs must strip off their designated track suit while holding down three buttons in the driver's seat of the RV. If a button is released, their timer will go 30 times faster; if two, 60 times faster; and if all three, 120 times faster. The HG with the shortest recorded time upon hitting the buzzer will win.

Frank was the winner. Natalie, Bronte, and Bridgette formed the "Spy Girls" alliance in view of Tiffany, who informed the 8 Pack. As a punishment for landing in "Mystery Land," Category 4 had to wear "pixelated" costumes for the week. At the Roadkill ceremony, Frank secretly nominated Paul. Corey and Da'Vonne were selected to join Nicole, Jozea, Paulie, and Paul for the Power of Veto (PoV) competition.

• Power of Veto ("Dizzy Dog"): Wearing dog costumes, the HGs must spin on their stand 15 times to earn 45 seconds, which would cause them to become dizzy. They use this time frame to crawl along obstacles and stack dog treats on top of their doghouse. If they fail to return to their stand and respin before their 45 seconds is up, they will be eliminated. The first HG to stack all forty treats and hit their button wins.

Paul won and at the Veto ceremony, took himself off the block, forcing Frank to name Bridgette secretly as the replacement nominee. Jozea, confident he had the votes to stay, was evicted 7-4, with Team Unicorn, except for James, and Paul voting to evict Paulie. Julie then informed Jozea about the "Battle Back" competition and that he would compete against the next evicted HG.

• Head of Household ("Berry Balanced"): Each team must send a member across one of two log courses: a longer, easier one or a shorter, more difficult one. That member must then grab a red berry and return it to their team station to fill four columns with a total of 40 red berries. One column should be filled with ten red berries to lock in before proceeding to the next one. However, if a member falls along the course while a column is not locked in, that column loses its berries and he or she is eliminated from the team. The first team to retrieve the blue berry after filling their columns wins, with the retrieving member becoming HoH.

Category 4 won, giving them immunity from this week's eviction, and Paulie became HoH. Paulie targeted Team Unicorn for voting to evict him, with a plan to backdoor Victor for being a physical threat. He then nominated Bronte and Paul, who offered himself as a pawn to gain the trust of the House.

• Roadkill ("18 Dollas"): Each HG must look at a set of ten items with different prices. They must then put tags on six items that add up to exactly $18. The HG who correctly tags the six items and hits the buzzer fastest wins.

Victor won. He revealed his win to Paulie, who disclosed it to other HGs. At the Roadkill ceremony, Victor secretly nominated Tiffany for lack of association with him. With Paul aware of the plan to backdoor his closest ally, Victor, he advised him not to be too trusting of everyone, but the latter disagreed. Tiffany became paranoid about being the target but Paulie and her allies assured her she was safe. They, however, thought she was starting to play like her sister Vanessa and considered voting her out. Da'Vonne and Zakiyah were selected to join Paulie, Bronte, Paul, and Tiffany for the PoV competition.

• Power of Veto ("Toe-zarks"): The HGs have 12 minutes to collect letters with corresponding point values from big toes scattered in a pond. They must take the letters back to their board, one at a time, and spell the best word possible. The HG who correctly spells a word with the highest point value wins.

Paulie was the winner. Da'Vonne told Paulie and her allies about Tiffany's attempt to win the competition despite their wishes for her to throw it to prevent Victor from nominating someone from their alliance. This attempt reinforced their suspicions on her gameplay. At the Veto ceremony, however, Paulie pushed through with his plan, taking Paul off the block and naming Victor as the replacement nominee. Victor was evicted 9-1, with Paul voting to evict Bronte. During this week, Jozea and Glenn also faced off in the Battle Back competition.

• Battle Back, Round 1 ("Berry Balanced"): The two evictees face off in a competition inspired by this week's HoH competition. However, there are only two columns and an addition of a "poison berry," which if retrieved by an evictee will get rid of the berries in the other evictee's column that is not yet locked in. The first evictee to lock in both columns wins.

Jozea was the winner and will face off against next week's evictee. Glenn was permanently eliminated from the game.

• Head of Household ("Kiss My Ace"): One member from each team must bounce a ball on a big tennis racket with bouncy strings in an attempt to land it in the highest-scored slot possible on their side of court. The member with the lowest score in each round will be eliminated. The teams then rotate members and bounce again. In case of a tie, all tied HGs will be eliminated, unless all four players got the same score, in which case they serve again. The last HG standing is the new HoH.

Bridgette was the winner, making her Category 4 teammates also immune from this week's eviction. The other HouseGuests felt that her HoH would be more of Frank's HoH because they were close allies. With Frank's advice, Bridgette nominated Paul and Tiffany for eviction, with Tiffany as the target for being a loose cannon. Despite being in the 8 Pack, Frank and Tiffany did not get along well.

• Roadkill ("Horn Star"): Each of the HouseGuests must press a set of five horns and listen to their respective honks. They then had to listen to a sequence of eight honks and repeat the sequence by pressing the correct horns. If they press the wrong horn, they will hear must try again. The Houseguest who repeats the sequence in the fastest time will win.

Frank was the winner, and at the Roadkill ceremony, secretly nominated Bronte for eviction. Bridgette was upset that her Spy Girls ally was nominated again, not knowing that her closest ally Frank did it. Natalie and Paulie were selected to join Bridgette, Bronte, Paul, and Tiffany for the PoV competition.

• Power of Veto ("Vetolicious"): The HouseGuests must look at a sequence of colored ingredients labeled with respective tastes that will be flashed on a monitor. Each ingredient is contained in a beaker. Julie will then ask a question about the sequence and the Houseguests must pour in their pot the ingredient that corresponds to their answer. If they pour the wrong ingredient, their pot will explode and they will be eliminated. It was also based on Saved By the Smell (BB17) and BB Blast (BB16). The last HG standing will win PoV, in addition to a dinner from Outback Steakhouse for their team and another team of their choice. Host was Da'Vonne.

Bridgette won and chose Big Sister to join Category 4 for the reward dinner. At the Veto ceremony, Bridgette kept her nominations the same. Frank was confident that Tiffany would be evicted. Da'Vonne, still having issues with Frank, rallied the rest of the 8 Pack to flip the vote against Bronte, knowing that Tiffany would go after Frank. On eviction night, Frank and Bridgette were blindsided when Bronte was evicted 5-4. During this week, Jozea and Victor also faced off in the Battle Back competition.

• Battle Back, Round 2 ("Kiss My Ace"): The two evictees will face off in a competition inspired by this week's HoH competition. They will have three balls and must bounce them, one at a time, on a big racket in an attempt to hit one of the five smaller, propped-up rackets with their opponent's face on them on the other side of the court. If they run out of balls, they must retrieve them and bounce again. The first evictee to hit all five rackets will win.

Victor was the winner and will face off against next week's evictee. Jozea became permanently eliminated from the game.

• Head of Household ("Euro Trippin"): Julie will read statements about the said photos, and the HGs will respond whether the comments are TRUE or FALSE. An incorrect answer will result in elimination. The last HG standing will be HoH.

Paulie was the winner, making his Category 4 teammates immune from this week's eviction and, to the dismay of the 8 Pack, postponing their plan of evicting Frank. Despite being enemies the previous week, Tiffany, Frank, and Bridgette aligned after being outcasts. They planned on targeting Paulie's alliance with Zakiyah, Nicole, and Corey for running the House. Paulie nominated Natalie and Tiffany for eviction, shifting the target back on Tiffany.

• Roadkill ("Gasping for Air"): Each of the HGs must hang air fresheners on colored lines. If an air freshener falls on the floor, it is out of play. The HG who hangs the most air fresheners in the shortest time will win. Tiffany was the winner, and at the Roadkill ceremony, secretly named her teammate and Paulie's closest ally, Corey, for eviction in hopes of shifting the power in the House. She told Da'Vonne she was the Roadkill winner, but Da'Vonne decided not to reveal this information to the 8 Pack to avoid further tension with Tiffany. Da'Vonne and Paul were selected to join Paulie, Natalie, Tiffany, and Corey for the PoV competition.
• Power of Veto ("Scooper Star"): HGs will compete in head-to-head matches. They must look at a set of ice-cream cones on a monitor, and replicate those cones by transferring one ice-cream scoop at a time, not setting any scoops on the ground, and only having three scoops on a cone. They must then press their buzzer and if correct, will win that round and eliminate their competitor. The last HG standing will win. Host was Zakiyah.

Corey was the winner, but considered not using the Veto on himself for fear of Nicole being nominated in his place. Shortly after the competition Da'Vonne started getting paranoid, which made Tiffany suspicious. At the Roadkill ceremony, Corey removed himself from the block, and Tiffany secretly nominated Da'Vonne in his place, hoping the House would see the latter as a bigger threat. Despite Tiffany campaigning hard to stay in the House, she was evicted 8-0. During this week, Victor and Bronte also faced off in the Battle Back competition.

• Battle Back, Round 3 ("Euro Trippin"):

Victor was the winner and will face off against next week's evictee. Bronte was permanently eliminated from the game.

Following Victor’s return, the HGs participated in the new HoH competition

• Head of Household ("Watch Your Dubstep"): In this competition, HouseGuests had a wristband attached to a confetti box. They must keep their hand above their head while stepping over the light bars that shuffle by their feet. If they drop their hand, their confetti box will open, eliminating them from the competition. The last HouseGuest standing will be the new Head of Household. James was the winner.

On Day 38, James nominated Bridgette and Frank for eviction, with Frank as the target. On Day 39, James, Bridgette and Frank, as well as Michelle, Da’Vonne, and Nicole, competed in the veto competition.

• Power of Veto ("OTEV the Dope DJ"): In this competition, OTEV asked the HouseGuests a riddle about a competition. They then had to find a record with the name of the competition described in the riddle. The last HouseGuest to return the correct record to OTEV will be eliminated. The last HouseGuest standing will win the Power of Veto.

Michelle won the Power of Veto. On Day 41, Michelle decided not to use the Power of Veto. On Day 42, all the HouseGuests solved the clues and discovered the secret room. On Day 44, Frank was evicted 9-0 and was revealed not to have the round trip ticket. Julie also revealed another twist to the viewers-- "America's Care Package"—where for the next five weeks, America voted to send a care package to a HouseGuest. Once a HouseGuest receives a care package, they may not receive a future one.

• Head of Household ("Perfect Shot"): Each HouseGuest had a lane with slots numbered 1-21. They must roll their ball down their lane to make the highest score. They had the opportunity to practice by rolling their yellow ball down their lane as often as they wanted. Whenever they decided to take their best shot, they must roll the red ball. Whatever slot the red ball lands in will be their official score. The HouseGuest with the highest score will be the new Head of Household.

Paul won. The bottom four performers, Corey, Natalie, Paulie, and Zakiyah, became Have-Nots for the week. However, Natalie received America's Care Package, which contained a Never-Not Pass, rendering her immune from being a Have-Not for the rest of the season. On Day 45, Paul nominated Bridgette and Paulie for eviction. On Day 46, Paul, Bridgette, Paulie, Corey, Victor, and Natalie competed in the veto competition.

• Power of Veto ("Ready, Set, Whoa"): HouseGuests had to hold down two buttons in their starting lane. At the end of their lanes, a monitor cycles through the words "ready, set, go." If a HouseGuest releases a button before the word "go," they are eliminated. Once they see "go," they must run to the end of their lane and hit one of the five buttons. The last person to hit a button is eliminated. Once a HouseGuest uses a button, it is out of play for future rounds. The last HouseGuest standing wins the Power of Veto.

Paulie won. On Day 48, he took himself off the block, and Paul named Da'Vonne as the replacement nominee. On Day 51, she was evicted 6-2, with Michelle and Zakiyah voting to evict Bridgette. Da'Vonne was revealed not to have the round trip ticket and became the first member of the jury.

• Head of Household ("Harsh Hashtags"): In this competition, HouseGuests stood on a small disc suspended by a hanging rope. As the competition continued, they spun into punching bags. If a HouseGuest falls off their disc, they are eliminated. The last HouseGuest standing will be the new Head of Household.

Victor won. For being the first three HouseGuests to fall, Bridgette, Corey, and James became Have-Nots for the week. James received America's Care Package, which contained the power to prevent two HouseGuests from voting at the next eviction. On Day 52, Victor nominated Michelle and Zakiyah for eviction. On Day 53, Victor, Michelle, and Zakiyah chose Paulie, James, and Nicole for the POV competition.

• Power of Veto ("Hide and Go Veto"): HouseGuests had three minutes to hide their locked veto card in the House individually. Then, one at a time, HouseGuests entered the House and had one minute to attempt to find a veto card. If a HouseGuest's veto card is revealed, they are eliminated, though the owner of the veto cards will not be revealed until the end of the competition. The HouseGuest who hides their veto card the best will win the Power of Veto.

Paulie won but on Day 55 decided not to use the Power of Veto. At the live eviction, Julie informed the HouseGuests of the Double Eviction. Just before the first live vote, James used his America's Care Package to prevent Corey and Paul from voting. On Day 58, Zakiyah was evicted 3-2, with Nicole and Paulie voting to evict Michelle. Zakiyah was revealed not to have the round trip ticket, and she became the second member of the jury. Immediately after Zakiyah's eviction, the HGs participated in the new HoH competition.

• Head of Household ("Statcathalon"):The HouseGuests received numerical questions. HouseGuests were required to state whether the real number was more or less than the number mentioned in the question. An incorrect answer resulted in elimination. The last HouseGuest standing will be the new Head of Household.

Corey was the winner and nominated Bridgette and Michelle for eviction, putting the plan to evict Bridgette in motion. Corey, Bridgette, and Michelle, as well as Paul, Nicole, and James, later competed in the POV competition.

• Power of Veto ("Veto Time"):HouseGuests had to run across their lane into their ball pit at the end. They must search through the balls to find three clocks, then return their clocks to their stand one at a time. After they retrieve all of the clocks, they must grab their veto symbol above their ball pit and hit their button. The first HouseGuest to hit their button wins the Power of Veto.

Corey won but decided not to use the Power of Veto. On Day 58, Bridgette was evicted by a 5-1 vote, with Natalie voting to evict Michelle. Bridgette was revealed not to have the round trip ticket, and she became the third member of the jury.

• Head of Household ("Hollywood Squirrels"):HouseGuests competed in one-on-one matches. In each round, they were asked a question based on a grid of Benny the BB Comp Squirrels. If a HouseGuest buzzes in with the correct answer, they eliminate their opponent. If they are incorrect, they are eliminated. The HouseGuest who survives in each round must pick the next two HouseGuests to face off. The last HouseGuest standing is the new Head of Household.

Victor won. For being the first two HouseGuests eliminated, Michelle and Nicole became Have-Nots for the week. Nicole received America's Care Package, which contained safety for the week, on the condition that she wear a "Super Safety" costume all week. On Day 59, Victor nominated Corey and Paulie for eviction, with Paulie as the target. On Day 60, Zingbot made an appearance and hosted Victor, Corey, Paulie, Paul, Nicole, and James in the POV competition, with Natalie moderating.

• Power of Veto ("Zingbot for President"): In each round, HouseGuests launched a beanbag at a map to claim votes for Zingbot. Once a spot has been landed in, future tosses into that spot will have a score of zero. The HouseGuest with the fewest votes in each round will be eliminated from the competition. After each HouseGuest has been eliminated, they claim a campaign gift. HouseGuests eliminated in future rounds have the option of keeping their gift or claiming a gift already revealed. The HouseGuest with the Power of Veto at the end of the game will win the Power of Veto. Paul became a member of the BB Secret Service, James won $5,000, Paulie must bake apple pies any time he is instructed by Big Brother for the rest of the season, Corey has to wear the "Patriotard" for the week, and Nicole won a trip to anywhere in the United States.

Victor won the Power of Veto. On Day 62, he decided not to use the Power of Veto. On Day 65, Paulie was evicted 5-0 and was revealed not to have the round trip ticket and became the fourth member of the jury. The tickets expired, and it was later revealed that Paul had the round trip ticket.

• Head of Household ("The Black Box"): In this competition, the HouseGuests entered the black box and held down their button. Throughout the competition, HouseGuests were given opportunities to search the black box for discs. There are also dummy discs that will not fit on their pole. If a HouseGuest does not return to their button before time is up, they are eliminated. After two hours and ten searches, the player who survives with the most discs will be the new Head of Household. Michelle won the advantage for the competition and received an extra 30-second solo search.

Natalie was the winner. Michelle received America's Care Package, which contained the power of co-HOH. She and Natalie both have safety, share the HOH room, and each name one nominee. Michelle's week as a Have-Not was also cancelled. On Day 66, Michelle and Natalie nominated Paul and Victor for eviction, respectively. On Day 67, all HouseGuests except Nicole competed in the POV competition.

• Power of Veto ("BB Storm Watch"): In the days leading up to the competition, HouseGuests listened to BB Storm Watch updates. In this competition, HouseGuests competed individually. HouseGuests looked at a teleprompter for sentences with blanks. They had to report the weather and fill in the blanks with the name of one of the first five evicted HouseGuests while standing in a storm. If the sentence passes through the teleprompter before the HouseGuest fills in the blank, they will be incorrect. The HouseGuest who fills in the most blanks will win the Power of Veto.

Paul was the winner. On Day 69, he took himself off the block, and Michelle named Corey as the replacement nominee. On Day 72, Victor was evicted by a 2-1 vote, with Paul voting to evict Corey. He became the fifth member of the jury. Julie then informed the HouseGuests that the jurors will compete in the next Head of Household competition, with one of them returning to the game.

• Head of Household ("Welcome to Loch Mess"): In this competition, HouseGuests stood on a small platform against a wall. If anyone falls off, they will be eliminated. The last juror standing will be back in the game, and the last HouseGuest standing overall will be the new Head of Household.

Victor beat out the other jurors to re-enter the game, becoming the first HouseGuest in Big Brother history to return to the House twice in one season. Nicole became the new Head of Household. For being the first two HouseGuests to fall, Corey and Victor became Have-Nots for the week. Corey received America's Care Package, which gave him $5,000 to use to bribe another HouseGuest in the upcoming week. On Day 73, Nicole nominated Michelle and Paul for eviction, with Michelle as the target. On Day 74, all HouseGuests except Natalie competed in the POV competition.

• Power of Veto ("Santa's Little Counters"): HouseGuests had a few minutes to count groups of items throughout the backyard. In this competition, they were asked how many of a certain object were in the display. After everyone revealed their answer, they stay or fold. If a HouseGuest folds, they are ineligible to win a candy cane but cannot be eliminated. If a HouseGuest stays and is the closest to the correct answer, they win a candy cane. If a HouseGuest stays and they are the furthest away from the answer, they will be eliminated. The first HouseGuest to get three candy canes will win the Power of Veto.

Nicole was the winner. On Day 76, she decided not to use the Power of Veto. Corey used his bribe on Victor in return for him voting out Michelle. On Day 79, after Nicole cast the tie-breaking vote, Michelle was evicted by a 3-2 vote, with James and Natalie voting to evict Paul. She became the fifth member of the jury.

• Head of Household ("Poached Eggs"): In this competition, HouseGuests had to maneuver eggs through their chicken wire and through their hole. They then had to roll their egg down the ramp in an attempt to knock down the letters "HOH." The first HouseGuest to knock down all of their letters would become the new Head of Household.

Victor was the winner and became HOH. For being the last two HouseGuests to place an egg in their special "Have" holder, Natalie and Victor became Have-Nots for the week. However, because Victor won HoH and Natalie had a Never-Not Pass, all of the HouseGuests were safe from being Have-Nots for the week. On Day 80, Victor nominated James and Natalie for eviction. On Day 81, all of the HouseGuests competed in the POV competition.

• Power of Veto ("Being Mac"): sponsored by the new CBS show, MacGyver. In this competition, HouseGuests competed individually. They had to figure out how to escape three different rooms as fast as possible. The HouseGuest who escapes all three rooms fastest will win the Power of Veto, as well as a trip to the set of MacGyver.

Corey was the winner, but on Day 83, decided not to use the Power of Veto. On Day 86, Natalie was evicted 3-0. She became the sixth member of the jury.

• Head of Household ("Slide-In Theater"): In this competition, HouseGuests had to fill their small scoop with butter, walk to the end of their slippery lane, and pour it into their bowl. If a HouseGuest fills up their small bowl, they receive a larger scoop. The first HouseGuest to retrieve the ball from their large bowl will be the new Head of Household.

Corey was the winner and, on Day 87, nominated Paul and Victor for eviction. On Day 88, the HouseGuests zipped in the veto competition.

• Power of Veto ("BB Comics"): A spoof of DC Comics. In this competition, HouseGuests competed individually. HouseGuests had to ride a zip line past the comic studio window to get a look at a set of sixteen comics. They must replicate the comic studio on their computer. However, there are decoy comics with slight differences. The HouseGuest who replicates the studio wall in the fastest time will win the Power of Veto.

Featuring:

• Glenn as Doctor Groom
• Jozea as the Hot Mess-iah
• Bronte as the Mathematician
• Tiffany as the Emotional Wrecking Ball
• Frank as Eudy's Booty
• Da'Vonne as Day-Struction
• Zakiyah as The Hottie
• Bridgette as the Killer Cabbage
• Paulie as aPIEcalypse
• Michelle as Big Meech
• Natalie as Princess Pep
• Victor as El Fit Vic
• Corey as the Missile-Toe
• James as Colonel Camo
• Paul as the Motormouth
• Nicole as the Super Safety Girl

Nicole was the winner. On Day 89, she decided not to use the Power of Veto. On Day 90, Victor was evicted by a 2-0 vote. He became the seventh member of the jury.

Following Victor’s third eviction, the HGs participated in the new HoH competition.

• Head of Household ("What the #$@!?? (Bleep)"): HouseGuests were shown a series of clips with a censored word or words. Julie then gives them words as to what the blurred phrase may be. The HouseGuests must state if her suggestion is true or false. A correct answer earned a HouseGuest a point. The HouseGuest with the most points after seven questions will be the new Head of Household.

Paul was the winner and, on Day 91, nominated Corey and Nicole for eviction. On Day 92, the HouseGuests competed in the veto competition.

• Final Power of Veto ("Cover Your Bases"): In this competition, HouseGuests were asked on what day a certain event took place in the House. The HouseGuests had to step on their bases to display the correct day, then hit the umpire to lock in their answer. If they are incorrect, their counter will drop to zero and they must try again. The last person to display the correct day get a strike, and three strikes resulted in elimination. The last HouseGuest standing will win the Power of Veto.

Paul was the winner, but on Day 92, decided not to use the Power of Veto. On Day 92, after James cast the sole vote to evict Corey, he became the eighth member of the jury.

• Head of Household, Part 1 ("Hang In There Kitty"):HouseGuests had to follow a laser to one of three endurance stations. Once the laser stops, they have fifteen seconds to climb onto the station. If the laser re-appears, they must jump off of their station and follow it again. If they fail to climb onto their station within 15 seconds or fall before the laser re-appears, they will be eliminated. The last HouseGuest standing will win Part 1 of the competition and advance to Part 3.

Paul was the winner. James and Nicole then faced off in Part 2 of the Final Head of Household competition.

• Head of Household, Part 2 ("Snap Shot"): James and Nicole competed individually. They had to read a clue and place the three HouseGuests that applied to the clue into the roller coaster car. They had to push the car down the track, then take a snapshot of the HouseGuests while in frame. If they are incorrect or the HouseGuests are not in frame, they must try again. The HouseGuest who finishes all three snapshots faster will win Part 2 and advance to Part 3 against Paul. Nicole was the winner.

Paul and Nicole had the final showdown in Part 3 of the Final Head of Household competition.

• Head of Household, Part 3 ("Scales of Just-Us"): In this competition, Nicole and Paul were read a series of statements made by the jurors, then guessed how the juror completed each statement. The HouseGuest with the most points after eight questions is the final Head of Household of the season.

Paul won 4-3. On Day 99, after he cast the sole vote to evict, James became the final member of the jury. On Day 99, after receiving Da'Vonne, Zakiyah, Paulie, Natalie, and Corey's votes, Nicole received $500,000 and was declared the winner of Big Brother 18, the first female winner since Rachel Reilly in Big Brother 13 and the first woman to win against a man in the final two. Paul received $50,000 as the runner-up, and Victor was revealed to be America's Favorite HouseGuest, receiving $25,000 and bringing his total cash winnings to $30,000.