Based from the Real Horrible Histories from their YouTube Channel, Books and their Magazines including their Shows! Alot of Things are here and they're: Vicious Vikings Awesome and Awful Egyptians Rotten Romans Terrible and Terrifying Tudors Vile Victorians Measly Middle Ages Gorgeous Georgians Groovy Greeks And Such More! And is also Based from their Game called 'Gruesome Game-a-thon'.