A pair of fraternity brothers (Alex & Joseph) compete against two female best friends (Jessee & Cassidy) to answer puzzles.
Canadian best friends (Lynze & Sara) compete against an engaged couple (Amanda & Robert) to answer difficult puzzles.
Twin brothers compete against a suburban married couple from New Jersey.
Best friends compete against sisters to answer difficult puzzles.
A man good at celebrity impressions and his wife (Seth & Holly) compete against a couple (Briana & Brian).
West coast cousins (Rachel & Jenaya) compete against an east coast mother and daughter (Cori & Linda).
American friends (Amy & Marilyn) compete against a married couple from France (Deborah & Maxime) to answer brain teaser puzzles.
Friends (Terrance & Courtney) compete against an Iraq War Veteran and his wife (Edward & Crystal).
A woman with an IQ of 145 and her roommate (Charlie & Danielle) compete against two best friends (Mark & Dan).
American friends compete against a married couple from France to answer increasingly difficult brain teaser puzzles.
A MENSA member and his frat brother (Matt & Justin) compete against an engaged couple (Joe & Jessica).
Beat box brothers Max & Sam compete against dating lawyers John & April to answer difficult puzzles.
College friends (Nicole & Andrew) compete against a literature professor and her husband (Erica & Diego).
Childhood friends (Kelsey & JR) compete against a married couple (Kara & Brandon).
A minister and his friend (Leah & Ray) compete against an engaged couple (Tiffany & Dan) to answer puzzles.
A spiritual psychologist and her teammate (Tomek & Heidi) compete against two friends (Matt & Chauncey).
A man who can solve a Rubik's Cube with his feet and a friend (Peter & Greg) compete against childhood best friends (Jessica & Deven).
Two best friends (Donivan & Steven) compete against college sweethearts (Jacquis & Jessica) to answer increasingly difficult puzzles.
UCLA graduates (Karl & Alexi) compete against USC alumnae (Tiffany & Sarah) to answer difficult puzzles.
Childhood friends Kelsey and JR compete against married couple Kara and Brandon in a series of difficult puzzles.
An amateur mentalist and his co-worker (Hannah & Jeremy) compete against friends (Jamie & Taylor).
Two sisters (Princess & Kimberlina) compete against a dating couple (Sarah & Joe).
A puppeteer and her co-worker (Jake & Natalia) compete against best friends (Drew & Charley) with difficult brain teaser puzzles.
Long-time best friends compete against former colleagues to answer increasingly difficult brain teaser puzzles.
A man good at celebrity impressions and his wife compete against a dating couple to answer difficult puzzles.
Comic Ben Gleib hosts as twin sisters compete against best friends to answer increasingly difficult brain teaser puzzles.
Childhood friends (Roger & Jennifer) compete against an engaged couple (Tiffany & Manuel).
A pair of beatbox brothers vs dating lawyers to answer increasingly brain teaser puzzles.
A former beer pong champion and his friend compete against a women's studies major and her friend.
A woman with an IQ of 145 and her roommate compete against two best friends to answer increasingly difficult brain teaser puzzles.
An Iraq War Veteran and his wife compete.
An actor and her friend compete against two best friends.
New Jersey friends compete against an fashion cousins to answer increasingly difficult brain teaser puzzles.
Childhood friends compete against an engaged couple to answer increasingly difficult brain teaser puzzles.
A neuroscientist and her friend (Princess & Justin) compete against co-workers (Derek & Tim) to answer brain teaser puzzles.
Co-workers compete against a married couple.
UCLA graduates compete against USC alumnae to answer increasingly difficult brain teaser puzzles to win.
A spiritual psychologist and her teammate compete against two friends to answer increasingly difficult brain teaser puzzles.
Two singles compete against two moms.
A former pro-football player and his friend compete against married rocket scientists.
Two sets of friends compete against each other (Lanett & Supriti vs. Andrew & Nathan).