Intros are mini-demos that rose in popularity during the days of MS-DOS. They are so named because many were distributed inside archives of warez to advertize a BBS, or to show a “credits-roll” of the crackers who cracked the software being distributed.
Intros then grew to become works of art in themselves, where demo programmers or crackers would attempt to squeeze amazing graphics and music into 64k, 32k or even smaller executable files.
TakeDown.NET -> “Intro”