In order to rescue Doraemon from the mysterious castle, Nobita, Shizuka, Gian, and Suneo advance their adventure while defeating enemy robots by solving problems such as shapes, puzzles, and mazes. The stage of the adventure is the world in the secret gadget "Gamebook". The interior of the huge castle is divided into 10 floors, each consisting of multiple stages. In each stage, the screen becomes a 3D RPG-style screen, and various robot soldiers stand in the way of Nobita and his friends. The problems that appear in the game are from the popular educational app "ThinkThink," which has been enjoyed by 2 million children in 150 countries around the world. A large number of calculation problems of the original four arithmetic operations are also recorded, and it is also useful for mastering the calculation skills required in arithmetic.