Cthulu Dice GameRoll to steal others sanity or go mad trying! Serving Cthulhu is fun except for all those other cultists out to get you. So get them first! Cthulhu Dice lets you drive your rivals mad Very, very quickly. Players take turns rolling the big, beautiful, custom 12 sided die, embossed with tentacles, Elder Signs, and more. Destroy your opponents' sanity! Better yet, steal it. But watch out for Cthulhu when he comes up, he takes sanity from everyone!