Pro Mahjong Kiwame 64 (Japan) (プロ麻雀極64) is a Japanese mahjong video game released for the Nintendo 64 in 1999. Developed by Seta Corporation and published by Athena, the game is the sequel to the original Pro Mahjong Kiwame released for the Super Famicom in 1995. The game features both single-player and multiplayer modes, with the single-player mode featuring a story mode with several characters to play as. The game also features a variety of different rulesets, including the standard Japanese ruleset, as well as a variety of different rule variants. Players can also customize the ruleset to their liking and save their settings. The game also features a variety of different tilesets, as well as a variety of different backgrounds and music. The game also features a variety of different game modes, including a tournament mode and a practice mode. Pro Mahjong Kiwame 64 is a great game for fans of the mahjong genre, as it provides a variety of different options and a great amount of replayability.