A gamebook is a book where the reader interacts with the book, influencing the outcome of the story. A well-known example of a game book is Choose-Your-Own-Adventures, though there have been many other variations, ranging from books that simply involve choices to books that require puzzle solving to books that require the roll of dice and some that have readers (players!) gather items or track stats like health points in order to succeed in completing the book’s story. The Riddle of the Cloud Kingdom has choices, puzzles to solve, dice rolls, item collection, and achievements.
If your family enjoyed The Riddle of the Cloud Kingdom, here are some other books you might want to check out: