- The journey through time, Geronimo Stilton ; translated by Lidia Tramontozzi
- The hour of magic, the eighth adventure in the kingdom of fantasy, Geronimo Stilton
- A mammoth mystery, Geronimo Stilton ; illustrations by Giuseppe Facciotto (pencils), Livio Carolina (inks), and Daniele Verzini (colors) ; translated by Julia Heim
- Slurp monster showdown, Geronimo Stilton
- Mysterious eye of the dragon, Geronimo Stilton ; illustrations by Danilo Loizedda, Antonio Campo, Daria Cerchi, and Serena Gianoli ; translated by Andrea Schaffer
- Suitcase full of ghosts, Geronimo Stilton. Illustrations by Ivan Bigarella
- Geronimo Stilton 3 in 1, by Geronimo Stilton ; illustrations by Edizioni Piemme
- A Christmas carol, [adapted by] Geronimo Stilton ; based on the novel by Charles Dickens ; [illustrations by Andrea Denegri and Edwyn Nori] ; [translated by Emily Clement]
- Get into gear, Stilton!, text by Geronimo Stilton ; illustrations by Alessandro Muscillo (design) and Christian Aliprandi (color) ; translated by Lidia Morson Tramontozzi
- Geronimo Stilton the graphic novel, text by Geronimo Stilton ; story by Elisabetta Dami ; illustrations by Tom Angleberger ; translated by Emily Clement ; color by Corey Barba ; lettering by Kristin Kemper
- The phantom bandit, Geronimo Stilton
- Geronimo Stilton reporter, by Geronimo Stilton
- Thea Stilton and the treasure seekers, Geronimo Stilton ; [text by Thea Stilton ; illustrations by Giuseppe Facciotto, Chiara Balleello, Barbara Pellizzari, Valeria Brambilla, and Alessandro Muscillo ; translated by Julia Heim]
- The treasure of Easter Island, Geronimo Stilton ; illustrations by Giuseppe Ferrario and Flavio Fausone ; translated by Lidia Morson Tramontozzi
- Hug a tree, Geronimo, Geronimo Stilton
- Time warp, the seventh journey through time, Geronimo Stilton
- The last resort oasis, Geronimo Stilton ; illustrations by Danilo Loizedda, Carolina Livio, Daria Cerchi, and Valeria Cairoli ; translated by Anna Pizzelli
- I'm too fond of my fur!, Geronimo Stilton ; [illustrations by Larry Keys]
- The helmet holdup, Geronimo Stilton
- Superstore surprise, Geronimo Stilton ; illustrations by Danilo Loizedda, Antonio Campo, and Daria Cerchi ; translated by Anna Pizzelli
- Alien escape, Geronimo Stilton ; [Illustrations by Giuseppe Facciotto and Daniele Verzini ; translated by Emily Clement]
- The cheese experiment, Geronimo Stilton ; illustrations by Andrea De Negri (design) and Valentine Grassini (color) ; translated by Lidia Morson Tramontozzi
- The chocolate chase, Geronimo Stilton ; illustrations by Danilo Loizedda (design), Antonio Campo (pencils)
- Geronimo on ice!, Geronimo Stilton ; illustrations by Danilo Loizedda and Daria Cerchi ; translated by Andrea Schaffer
- The guardian of the realm, the eleventh adventure in the Kingdom of Fantasy, Geronimo Stilton ; illustrations by Silvia Bigolin, Ivan Bigarella, Carla De Bernardi, Alessandro Muscillo, and Christian Aliprandi ; translated by Julia Heim
- Happy birthday, Geronimo!, Geronimo Stilton ; illustrations by Danilo Loizedda, Antonio Campo, and Daria Cerchi ; translated by Lidia Tramontozzi
- The hunt for the hundredth key, plus a bonus mini mystery and cheesy jokes!, Geronimo Stilton ; translated by Anna Pizzelli and Andrea Schaffer
- The sticky situation, Geronimo Stilton ; [illustrations by Danilo Loizedda, Antonio Campo, and Daria Cerchi ; translated by Anna Pizzelli]
- The super cup face-off, Geronimo Stilton ; illustrations by Danilo Loizedda, Antonio Campo, and Daria Cherchi ; translated by Emily Clement
- Have a heart, Geronimo, Geronimo Stilton ; illustrations by Danilo Loizedda, Carolina Livio, Daria Cerchi, and Valeria Cairoli ; translated by Anna Pizzelli
- The hunt for the Colosseum ghost, Geronimo Stilton ; translated by Anna Pizzelli
- The great mouse race, [text by] Geronimo Stilton ; [translated by Julia Heim ; illustrations by Giuseppe Facciotto and Daniele Verzini]
- Lost in time, the fourth journey through time, Geronimo Stilton ; illustrations by Danilo Barozzi, Silvia Bigolin, and Danilo Loizedda (design), Christian Aliprandi (color), and Piemme's archives ; translated by Julia Heim
- The race against time, the third journey through time, Geronimo Stilton ; illustrations by Danilo Barozzi and Silvia Bigolin ; translated by Julia Heim
- The missing movie, Geronimo Stilton ; [translated by Anna Pizzelli]
- The test of time, the sixth journey through time, Geronimo Stilton
- Don't wake the dinosaur!, Geronimo Stilton ; illustrations by Giuseppe Facciotto (design) and Daniele Verzini (color) ; translated by Lidia Morson Tramontozzi
- Help, I'm in hot lava!, Geronimo Stilton ; illustrations by Giuseppe Facciotto (design) and Daniele Verzini (color) ; translated by Emily Clement
- Flight of the Red Bandit, Geronimo Stilton ; illustrations by Giuseppe Facciotto (design) and Christian Aliprandi ; translated by Lidia Morson Tramontozzi
- The Karate mouse, Geronimo Stilton ; [illustrations by Federico Brusco and others]
- Mouse overboard!, Geronimo Stilton ; illustrations by Danilo Loizedda (design) and Christian Aliprandi (color) ; translated by Lidia Morson Tramontozzi
- We'll bite your tail, Geronimo!, text by Geronimo Stilton ; illustrations by Giuseppe Facciotto (pencils), Carolina Livio (inks), and Valeria Cairoli and Paolo Vicenzi (color) ; translated by Lidia Morson Tramontozzi
- The great rat rally, Geronimo Silton with Tom Angleberger ; story by Elisabetta Dami ; color by Corey Barba ; translated by Emily Clement
- Mouse vs wild, text by Geronimo Stilton ; illustrations by Giuseppe Facciotto [and 3 others] ; translated by Emily Clement
- Magical mission, Geronimo Stilton ; [illustrations by Alessandro Muscillo (pencils and inks) and Christian Aliprandi (color) ; translated by Lidia Morson Tramontozzi]
- No time to lose, the fifth journey through time, Geronimo Stilton
- The Hawaiian heist, Geronimo Stilton ; illustrations by Danilo Loizedda, Antonio Campo, and Daria Cerchi ; translated by Anna Pizzelli
- The Super Chef contest, Geronimo Stilton
- The treasures of the kingdom, Geronimo Stilton ; illustrations by Carla Debernardi, Silvia Bigolin, and Andrea Alba Benelle ; translated by Julia Heim
- Welcome to moldy manor, Geronimo Stilton ; illustrations by Carolina Livio (design), Riccardo Sisti (ink), and Valentina Grassini (color) ; translated by Andrea Schaffer