What makes DOOM different from Wolfenstein 3-D?
[3-1] Texture-Mapped Environment [3-2] Non-Orthogonal Walls [3-3] Light Diminishing/Light Sourcing [3-4] Variable Height Floors and Ceilings [3-5] Environment Animation and Morphing [3-6] Palette Translation [3-7] Multiple Players [3-8] Smooth, Seamless Gameplay *3-9* New Monsters and Artificial Intelligence *3-10* Weapons