Moms and dads used to warn that heavy metal music are filled with satanic subliminal messages and that if you play them in reverse you can hear the devil's messages. Those people are about to have a field day as they now have evidence that DOOM's soundtrack is imbued with satanic symbols.
The discovery was made by Reddit user Tomcb who viewed DOOM's soundtrack using a spectrogram and found that it showed the devil's pentagram symbol and the number 666 in a repeated pattern. The number 666 is widely regarded as "the number of the beast" and is recognized as the number for the antichrist or the devil.
DOOM's composer Mick Gordon confirmed that Tomcb has discovered an Easter egg that was intentionally put in the game's sound track.