The player is placed in the center of the Vietnam war in 1966, playing as Westmoreland, who is a very deadly and highly trained U.S. The player must deal with various firefights, ambushes, booby traps, snipers, air strikes, anti-personnel mines, and more in order to finish their way to the end of each level. The story begins with a deadly Viet Cong raid, where you are left to survive of your own accord. The player assumes the role of Alan «The Bear» Westmoreland, a United States Marine Corps Sergeant. Mines are present in most levels, requiring players to activate his mine detector. In the game, there are AI marines which will help the player in some levels, each with different classes and specialties. The only immediately noticeable change in the game code was the removal of the remote detonator for weapon 6, the grenade, which was a pipebomb in Duke Nukem 3D. Very little was changed in regards to controls, movement rate, physics, and con (control file) language. The game itself is very similar to Duke Nukem 3D.
