American version of the reality game show which follows a group of HouseGuests living together 24 hours a day in the "Big Brother" house, isolated from the outside world but under constant surveillance with no privacy for three months.

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.

The Philippine adaptation of the reality game show "Big Brother" features Filipino housemates live together, share their stories and build meaningful relationships as they do tasks and challenges supervised by Big Brother. Every week a nomination is done, and the public decides who gets evicted and eventually become the Big Winner of the program.

Twelve people think they're in the final casting round for a reality show. In fact, they're already being secretly filmed, with 100,000 euros at stake.

Brazilian version of the reality game show in which a group of houseguests live together 24 hours a day, isolated from the outside world but under constant surveillance with no privacy. Each week a guest is voted out of the house until only the winner remains.