Housemates will be called to the garden, where a large grid containing 25 prizes and punishments currently stands.
Each housemate will take it in turns to throw a ball at the square of their choice and will receive a prize or punishment, depending on what is on the square.
Potential prizes include a date with former housemate Rebeckah Vaughan, a Sunday roast with Jay Mckray's mum and a romantic night for two. Whoever wins can spend the night in the spare room with a housemate of their choice.
A professional haircut and makeover, a phone call from home, afternoon tea in the Diary Room and alcohol for all the housemates are also up for grabs.
Some of the punishments the housemates could receive include a makeup ban for the entire house, a smoking ban and the confiscation of all house cutlery, cups and crockery. Past nominations could also be shown on the plasma screen.
Maisy James recently became the fourth person to be evicted from the Big Brother house on Friday. Faye Palmer's sister Jem subsequently entered the house.
Watch the Big Brother housemates having a pillow fight below: