Rattus is on a mission to raise Dave's Internet profile (as well as his blood pressure) and Dan, Eva and Shai compete to win Year Spheres in games including A Brush With Death and Phlegm Fling. Definitely not for the faint hearted.

Rattus becomes a suff-RAT-gette campaigning for rat rights and Seb, Brooke and Nathan battle it out to win Year Spheres in games, including Calamity Train and Grave Robbers.

Sam, Noah and Chiedza battle it out to win Year Spheres in games including Space Race and Lootin-khamun. And Rattus makes Dave the centerpiece of his star-studded celeb museum, which sounds way more glamourous than it is.

Hosted by Dave Lamb, who wants everyone to hear his new track, Rodent Style. Jasmine, Edward and Inaaya compete to win Year Spheres in games that include Pyramid Puzzle and Gong Farming.

Danyal, Rose and Tia get to test their knowledge of Horrible Histories with quirky quiz questions, set by the country's finest historical brains, and Rattus Rattus.

Rattus tries to ease Dave's ailments with historical cures, and Ruhama, Ben and Charlotte battle it out to win Year Spheres in games, including Calamity Train and Pig Piano.

Rattus pitches a disgusting new show idea to Dave, while Affan, John Oscar and Elisabeth compete to win Year Spheres in gruesome games, including Factory Fingers and Mega Bear Picnic.

Ella and Ashley battle it out to win Year Spheres in games, including Savage Seige and Gong Farming.

Rattus is on the hunt for a new chauffeur, and Paris, Keaton and Zainab battle it out to win Year Spheres in games, including I Want My Mummy and Space Race.

Dave and Rattus are victims of a (highly factually inaccurate) ancient Egyptian curse, and Leon, Ellen and Katherine battle it out to win Year Spheres in games including Lootin-Khamun and Phlegm Fling.