Hyakumasu Dora-Zan - Nobita no Time Battle

Hyakumasu Dora-San Nobita no Time Battle is an educational learning game for children. In the story, young Nobita Nobi loses motivation after a bad test score and naps, but future adult Nobita warns him of a dangerous 'Hundred-Masu World' filled with calculation battles. Using Doraemon's time machine, Nobita travels to this future to join the exciting Hundred-Masu calculation battles and become a master of addition and subtraction. Players progress through a 30-stage curriculum covering number recognition, counting, and arithmetic (with carry/borrow options) while battling other children in timed Hundred-Masu sums. Features include daily progress tracking, parent reports, reward coins for gadgets, 10 mini-games, and unlimited practice. What makes it stand out is the fun Doraemon-world adventure theme that turns math drills into an exciting time-travel battle, encouraging daily practice with encouragement and bonuses.