The thesis proposes a game-based learning software for elementary multiplication according to the multiplication learning strategies, learning theories, and game-based learning design methodologies. The software studies the learning contents including basic concept, meaning and property, and computational skills of multiplication. In order to evaluate the proposed software, an experiment was made to verify the effects on the learning achievement and students’ motivation. The experimental results show the software have a good effect on students’ learning and motivation. The thesis also conducts a research on multiplication remediation of the proposed software. From experimental results, there are good effects on remediation for most of students.