Please see pictures for condition.  Box, manual, and game all in awesome shape.  From my personal collection.

Get ready to take on the aliens in Duke Nukem: Zero Hour for Nintendo 64. This mature-rated game features multiplayer mode, allowing you to team up with friends and battle your way through the levels. With its arcade-style gameplay, this shooter, battle, and beat 'em up game will keep you on the edge of your seat from start to finish. Released in 1999 by GT Interactive, Duke Nukem: Zero Hour is a must-have for any fan of the franchise or for those who love fast-paced action games. This complete-in-box game comes with the manual and is in excellent condition.