Hafis, Muhammad, Herman Tolle, and Ahmad Afif Supianto. “A Literature Review of Empirical Evidence on Procedural Content Generation in Game-Related Implementation”. Journal of Information Technology and Computer Science 4, no. 3 (December 20, 2019): 308–328. Accessed August 9, 2022. https://jitecs.ub.ac.id/index.php/jitecs/article/view/134.