Marzuki, M., Syamsuddin, A. and Sukmawati, S. 2025. The Impact of Game-Based Learning on Motivation and Achievement in Mathematics Education: A Systematic Review (2020–2025). PPSDP International Journal of Education. 4, 2 (Dec. 2025), 1063–1080. DOI:https://doi.org/10.59175/pijed.v4i2.848.