Aghnia, N. et al. 2026. Development of a Problem-Solving-Based Mathematics Educational Game to Support High School Students’ Mathematical Reasoning Ability. Kognitif: Jurnal Riset HOTS Pendidikan Matematika. 6, 3 (Aug. 2026), 1256–1273. DOI:https://doi.org/10.51574/kognitif.v6i3.5637.