18 Mind-Blowing Facts You Never Knew About DOOM

10. Heavy Metal Influences

The first two Doom games are infamous for their atmospheric and instantly catchy soundtracks. However, those with an ear for music might find them a little familiar. That’s because many of the tracks take blatant inspiration from popular heavy metal artists from the '80s and early '90s.

In fact, many of the tracks come very close to being borderline plagiarism. Certain melodies are practically taken verbatim from songs belonging to Alice in Chains, Slayer, and Black Sabbath, among many others, and can be heard sprinkled throughout the soundtrack to both Doom and Doom II.

Despite this, none of these bands ever took legal action against id, likely because they loved Doom too much themselves to care.