Nekketsu Mahjong Sengen! AFTER 5 (Japan)

Published in Japan in 1991 from Video System Co., Nekketsu Mahjong Sengen! AFTER 5 is a single-player tabletop arcade game centered around the traditional card game of mahjong. Players face off against computer opponents in matches, utilizing a specialized keyboard designed for inputting tile combinations and executing moves according to mahjong rules. The game’s title translates to "Hot-blooded Mahjong Announcement! - After 5," hinting at a particular theme or setting within the gameplay experience. The arcade cabinet features sound chips that produce music and effects through an OKI MSM5205 and YM2413, contributing to the overall atmosphere of the game. While specific narrative details are not readily available, the game presents a unique twist on the classic tabletop genre with mature content intended for adult audiences. Gameplay involves strategic tile placement and careful observation of opponents' moves to form winning hands. The system uses two Zilog Z80 processors running at 6 Mhz to manage the game’s operations, ensuring responsive controls and an engaging experience for a single player.