User blog comment:Tommy,Klaus&Kol2012+/Do you think there are more tables out there?/@comment-82.34.210.166-20130406233014/@comment-5619706-20130407022712

I think it's possible considering all the efforts the Leviathan put into finding the tablet about them, they either knew other tablets exist--or they stumbled upon other tablets while excavating. I guess it does lend credence to their intelligence if they were the first 'race' to be aware of a tablet that could wipe them out, and the first one to act on it (save for Lucifer, whose intents on the angel tablet was never even mentioned).