He is a spacemouse - the Geronimo Stilton of a parallel universe! He is captain of the spaceship MouseStar1. While flying through the cosmos, he visits distant planets and meet crazy aliens. His adventures are out of this world! -- Alien Escape -- Geronimo Stiltonix's spaceship is in danger of exploding! The only solution is to replace the engine's batteries by tracking down a rare element When a group of mysterious aliens claim they can help, Geronimo...

From the Jurassic period and the dinosaurs, to a medieval castle, Geronimo Stilton and a few members of his family embark on an adventure through time in Professor von Volt's new time machine, the Mouse Mover 3000.

The Famous Fjord Race. It's the day of the Famous Fjord Race, a mice king competition. Geronimo Stiltonord isn't competing, since he gets seasick... but then he's dragged into a boat! Just when he thinks things can't get worse, the terrible vilekings appear-and so do the evil dragons. Squeak! Will his team stay afloat?

"When Paulina gets a phone call from home telling her that a friend is missing, the Thea Sisters travel to Peru to help solve the mystery. There, the five mice climb the Andes Mountians in search of a missing archeologist. Along the way, they stumble upone clues leading them to a mysterious hidden city. Will the Thea Sisters find Paulina's friend, and the traesure of the Secret City?"--P. [4] of cover.

The Galactic Goal. The space-mice have received an invitation to participate in the intergalactic soccerix championship. It's a tournament for the most popular sport in space! But Geronimo doesn't eve know how to play soccerix, let alone lead a team to victory against aliens with bizarre skills (like flying)! Can the space-mice team prevail?

"Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure! It's the night of the big Cavemouse Idol competition, but Geronimo Stiltonoot isn't there. He has a cold, and goes to bed early. So when it's discovered that the contest's valuable grand prize has been stolen, Geronimo is the main suspect! He must prove his innocence . . . or he'll end up in enormouse trouble!" --

"Professor Greenfur, the onboard scientist on spaceship MouseStar 1, has changed color from green to--orange! What's going on? To find out, the spacemice travel to his home planet of Photosyntheson. There, they learn that all of Professor Greenfur's relatives are being threatened by the nibblix, tiny aliens with very sharp teeth! Can the spacemice help in time?" --

Geronimo Stilton is summoned back to the Kingdom of Fantasy, but he finds Blossom, Queen of the Fairies, surrounded by dark fairies and behaving very coldly--and it is up to Geronimo to figure out just what is going on and find the allies he needs to free Blossom from the evil spell that is affecting her.

Determined to earn a mouseking helmet, Geronimo Stiltonord undergoes special training conducted by Miceking chief Sven the Shouter.

On his way to the Grand Masked Ball and what promises to be a disaster of a date, Geronimo is once again whisked away to the Kingdom of Fantasy, and this time he must save the Princess of the Vanilla Fairies from an evil wizard who is using the pirate ship, Ship of Secrets, to gather magical objects to increase his power and take over the kingdom.