The commercial version of Duke Nukem 3D contains several pieces of data that are unused in the game, such as sprites and bits of code.
Scorpion Tank EditMain Article: Scorpion Tank
The game contains unused sprites of an enemy resembling the Pig Cop Tank but shaped like a scorpion. The enemy has been dubbed the "Scorpion Tank" by fans.
Enemy top views Edit
There are a few sprites that show several early enemies as seen from above. These presumably would have been displayed in the Map View, but the idea was scrapped.