From the record-breaking, Number One bestselling author of KAY'S ANATOMY, Adam (Spoo-)Kay presents the funniest, goriest, and most terrifying activity book of all time: Kay's Gruesome Games.

Inspired by the blood-spattered, gut-spilling, skull-drilling history of medicine, Kay's Gruesome Games is packed to the (cauldron's) brim with petrifying puzzles, bloodthirsty brainteasers, and eerie experiments.

Featuring more than 350 creepy craft activities, revolting recipes and bone-crunching 'True or Poo' quiz questions, readers will need an eyeball for detail and a strong stomach as they:

• Pump blood out of homemade hearts
• Decode ancient cures for constipation
• Cook up maggot-infested cupcakes

So, grab your leeches and prepare your potions, as we go back in time to a history that's as hilarious* as it was horrifying. It won't hurt a bit … unless your sides split.

*Guaranteed to be significantly funnier than the Black Death


Adam Kay's children's books have been translated into 32 languages and sold over 1 million copies, making him one of the UK's bestselling children's authors. Kay's Anatomy became the fastest-selling children's general non-fiction hardback of the decade and his first children's novel, Dexter Procter the 10-Year-Old Doctor, was the No. 1 children's hardback fiction debut of 2025.


Praise for Kay's Anatomy:

'An enjoyably gross look at the human body. Hours of gruesome fun guaranteed' i

'Like listening to a teacher who makes pupils fall about' Sunday Times

'Totally brilliant!' Jacqueline Wilson

'Fun and informative' Malorie Blackman

'Very funny - this exciting book is bound to inspire the next generation of medics' Sunday Express


Praise for Kay's Marvellous Medicine:

'A ridiculously funny read that will delight, gross out and educate all at the same time' Independent

'Educational and entertaining. It should be on the national curriculum!' Harry Hill

'Completely marvellous and very funny' BookTrust