In order to become a riddlenaut you only have to devour the pages of this collection of riddles, which also include a game, and many surprises. Go with a Martian who has just arrived from outer space in search of the secrets hidden these 60 riddles, and help him with his fantastic mission. Have fun with Màriam Ben-Arab's lovely drawings and their thousands of details. Have fun, think and discover the answers to the riddles posed by Marcelo Mazzanti. And if you don't know the answer to one of the riddles, you'll find the answers at the end, but first try to guess.