Jikkyou Powerful Pro Yakyuu 6 (Japan) (Rev 1) (実況パワフルプロ野球6 (Japan) (Rev 1)) is a Japanese baseball video game developed by Konami and released for the Nintendo 64 in 1998. It is the sixth game in the Jikkyou Powerful Pro Yakyuu series, and the first game in the series to be released for the Nintendo 64. The game features updated rosters and teams from the 1998 season, as well as improved graphics and sound. Players can choose from a variety of game modes, including Exhibition, Tournament, and League. In addition, players can create their own teams and customize their players. The game also features a two-player mode, allowing players to compete against each other. Jikkyou Powerful Pro Yakyuu 6 (Japan) (Rev 1) is an entertaining and challenging baseball game that is sure to provide hours of fun for baseball fans.