16. Slayer World Painted Blood (2009)
I can already hear the screams of “Sacrilege!!” but hear me out. As much as I am a fan of the classic Slayer albums, when it comes to the cover art I do believe that this is far superior to “those” other Slayer albums. Four different covers were made for this release, and when you put them all together you had the entire world map made up of human skulls and bones. I still haven’t been able to find out who did the artwork though.