Saturday Mash-Up!

The viewers watching the show voted on who they wanted to be covered with gunge, from a selection of two or three options. In the first show, Steve Backshall was chosen by the programme's producers.

In Series 2, viewers' chosen celebrity had to answer questions in the space of ninety seconds, and can avoid being covered with gunge by answering the question correctly. If they answer incorrectly, they have a bucket of slime poured over them. At the end of the ninety seconds, the celebrity must answer a final question, which is always outlandish and nearly impossible to answer correctly. If answered incorrectly, the celebrity is slimed heavily with multiple buckets. To date, no one has ever answered the final question correctly. In the Christmas episodes there is no slime vote. All guests get covered in slime and sing a Christmas song.

Celebrities who have been gunged/slimed include Steve Backshall, DanTDM, Vick Hope, Kimberly Wyatt, Naomi Wilkinson, Lindsey Russell (twice), New Hope Club, Road Trip, Oti Mabuse, Lewys Ball, Olivia Grace and Lovevie, Colson Smith, Mark Rhodes, Briony Williams and Cat Henstridge.

A number of an object (for example, footballs) are placed into another object (for example, a phonebox). Viewers at home on the phone must guess what number of an object is in the other object.

Viewers are asked to send in a picture of themselves doing something different each week (for example, throwing away their homework).

Each week, a viewer watching at home is chosen to make various decisions to make. These include choosing what episode of a programme to show and choosing who does a task like tidying up the studio or eating a gross item.

Two celebrities must push a shopping trolley into a pyramid of 800 toilet rolls to see how many they can collect. Each toilet roll is worth a point, with the golden toilet roll being worth 10 points and the brown toilet roll causing them to lose 5 points. They can choose between 3 trollies, which change each week. While the crew count the rolls Nelson plays a game with the contestant called "Jonny's random supermarket item pricing game while we count the toilet rolls". The loser is hit in the face with two custard pies.

A celebrity is 'locked up in jail' and answers as many questions they can in 100 seconds.

A/two celebrity/s is put in detention and has to answer questions about themselves until the school bell rings. On one occasion, instead of a celebrity, Penfold from Danger Mouse was used.

A person gets voted who gets slimed. A person answers this question and have 90 seconds on the clock. If person gets correct, 1 point will be awarded. However, if the person gets incorrect, and gets slimed.

Here is the Ultimate Question Slime after 90 seconds on the clock when it's time's up and. If the person gets the correct answer, 20 points will be awarded and become the top of the leaderboard. However, if the person gets incorrect, and gets super slimed by all persons.