Mahjong Hourouki Okite (Japan)

Mahjong Hourouki Okite is a two-player tabletop arcade game released in Japan by Home Data in 1988. Players engage in matches of mahjong against opponents depicted as figures associated with underworld elements. The game utilizes a specialized keyboard for input, allowing players to manipulate tiles and make strategic decisions during gameplay according to traditional mahjong rules. The title, when translated from Japanese, refers to “Mahjong Vagrant Habits Law,” hinting at the unusual thematic setting that contrasts with typical mahjong games. While retaining core mechanics of the classic tabletop game, this release introduces a distinct visual style and character design. Built around a Motorola M6809 main CPU and a Zilog Z80 sound CPU, Mahjong Hourouki Okite is part of a series which began with Mahjong Houroki - Seisyun Hen in 1987 and continued with Mahjong Houroki Gaiden later the same year.