Game Development Dictionary
Duke Nukem 3D
Duke Nukem 3D was a game designed by 3d Realms. It uses portals and sectors (similar to Doom) in order to give the illusion of 3d space using a 2d mapping system. The mapping system and level designer are called Build. In addition, the Build Engine was used in other games such as Blood. At the time of release the Build engine was eclipsed by the Quake engine developed by ID software. Duke Nukem 3d was still a successful game due to the nature of the main character and the interactive enviroment.