After the incredible utter failure of long awaited fourth installments like Duke Nukem Forever, a lot of fans were pretty skeptical when they heard that DOOM was getting a reboot in 2016. Everyone breathed a sigh of relief when the final product wasn't just functional, it was awesome! It turns out there are quite a few Easter eggs tucked away through out the game, but they're a little bit harder to find than usual. One neat little extra is hidden within the song 'Cyberdemon' but you'll need to actually SEE the song to find the Easter egg. If you run the track through a spectrograph you can easily find 666, the mark of the beast, and a pentagram embedded within the higher frequencies. Now that's a deep pull!