Mega Mash-Up: Romans vs. Dinosaurs on Mars

These books take great subjects for boys and combine them into short, bonkers, and funny stories that are incredibly easy to read. The illustrations are bold and crazy, and there's plenty of space left on each page—together with suggestions for how to fill it—so kids can add their own drawings. The books read as hilarious, zippy stories that look a lot like novels but are terrific doodle books as well.

The Romans and Dinosaurs live together in a huge glass dome called Romasauria. They race their rocket chariots and feast on moon-cow and chips until life on Mars is threatened by a giant asteroid spotted by Augustus Astronomus through his giant telescope. Will a wooden catapult and some Dinosaur poop save the day? The Romans and the Dinosaurs are going to have to work together or it's KAPOW for life on Mars.