NHL Breakaway 99 (USA) (Japanese title: ナショナルホッケーレギュレーション) is a classic sports game developed and published by Nintendo for the Nintendo 64 video game console. It is the fourth installment in the NHL Breakaway series and the first game in the series to be released on the Nintendo 64. The game features all 26 NHL teams from the 1998-99 season and the player can choose to play in quick exhibition games or take part in a full season. The game also features a create-a-player mode and a trading card mode. The game also has a two-player mode and a four-player mode. The game uses a 3D engine and the graphics are very detailed and realistic. The game also features realistic sound effects and an intuitive control system. NHL Breakaway 99 is a great game for hockey fans and is a great way to experience the excitement of the NHL.