“Design and Build an RPG Game ‘Drop the Dragon’ as a Medium for Practicing Mathematics Using the Finite State Machine Method: Rancang Bangun Game RPG ‘Jatuhkan Naga’ Sebagai Media Berlatih Matematika Menggunakan Metode Finite State Machine” (2022) Procedia of Engineering and Life Science, 2(2). doi:10.21070/pels.v2i2.1233.