The semi-final sees teams competing for the remaining places in the grand final. In this high-stakes challenge they must create a monster and their lair.
Creative Service Challenge. Contestants become artists for a creative service challenge, and the judges expect three-course masterpieces as they take inspiration from a virtual forest at digital art gallery The LUME.
In the panic room task, two housemates must build a tent in total darkness. As a punishment, the housemate must wear three shirts: a special T-shirt designed for three people to wear together.
Contestants who want to win the Big Brass Mug must answer Tom Gleeson's questions about their expert subjects: The Bible, dog breed Weimaraners, punk band Green Day and classic Aussie film Puberty Blues.