King of the Nerds

Each Challenge pits numerous cast members from past seasons of reality shows against each other, dividing them into two separate teams according to different criteria, such as gender, which show they first appeared on, whether or not they're veterans or rookies on the show, etc. The two teams compete in numerous missions in order to win prizes and advance in the overall game.

Aspiring models compete for a chance to break into the business with a panel of judges critiquing their progress throughout the competition.

A single bachelor dates multiple women over several weeks, narrowing them down to hopefully find his true love.

The Biggest Loser features obese people competing to win a cash prize by losing the highest percentage of weight relative to their initial weight.

A Canadian reality television show in which a group of contestants, known as "house guests", are sequestered in the Big Brother House, under the surveillance of cameras and microphones, for the chance to win a grand prize of $100,000 by being the last remaining house guest. Each week, the house guests vote to evict one of their own until two house guests remain on finale night. The winner is decided by the last seven evicted house guests, known as the Big Brother Jury.

Big Brother is an Australian reality show based on the international Big Brother format created by John de Mol. Following the premise of other versions of the format, the show features a group of contestants, known as "housemates" who live together in a specially constructed house that is isolated from the outside world. The housemates are continuously monitored during their stay in the house by live television cameras as well as personal audio microphones. Throughout the course of the competition, housemates are evicted from the house - eliminated from the competition. The last remaining housemate wins the competition and is awarded a cash prize.

Teams of amateur robot fighting enthusiasts battle it out over a series of rounds in a huge purpose-built arena aiming to become the Robot Wars Champion.

Teams of LEGO enthusiasts go head-to-head, with infinite possibilities and an unlimited supply of LEGO bricks. Teams of two will compete against each other in ambitious brick-building challenges to be crowned the country's most talented amateur LEGO builders. Based on the hit British reality-competition series of the same name.