[citation][nom]agnickolov[/nom]What does 8-bit mean here anyway?[/citation]It's a reference to the style of sound & graphics of video games from the late 1980's and early 1990's (i.e. the era of video game consoles commonly thought of as having 8-bit CPUs).
Yes, VGA graphics were 8-bit, but you could argue that the indexed color modes were 18-bit (the pallet registers contained 6-bits each for R, G, and B).