Mahjong Keiji

Mahjong Keiji is a series of Japan-exclusive Mahjong video games developed by Koei for the Game Boy Advance (GBA) console. The games feature detective-themed storylines where players must solve crimes and mysteries through Mahjong gameplay. The series includes three games: Mahjong Keiji: Jiken Note, Mahjong Keiji: Detective's Academy, and Mahjong Keiji: Zenigata Kaihen!