jordy RJ, Marcos H, Wijaya Kusuma J, Intan Surya Saputra D, Purwadi P. Game design documents for mobile elementary school mathematic educative games. J. Soft Comput. Explor. [Internet]. 2023May8 [cited 2026Jul.14];4(2):69-78. Available from: https://mail.shmpublisher.com/index.php/joscex/article/view/129