"Duke Nukem is a platform video game developed and published by Apogee Software, featuring the adventures of the fictional character Duke Nukem.
The main objective of the game is to get to the exit of each level, while destroying enemies and collecting points. The game was notable in its time because of its smart level design which allows very fast gameplay. Additionally, it allows many objects onscreen to be shot: obstacles, as well as enemies, can be destroyed by gunfire. Besides points, some collectibles include health powerups, gun powerups, and some inventory items with special abilities.
Source: Wikipedia, "Duke_Nukem_(video_game)," available under the CC-BY-SA License.