This gorgeously crafted set of Call of Cthulhu dice have numbers and designs in green printed on the black 7-dice set. In addition to the numbers and the design, the Elder Sign is printed on one face of each of the dice, denoting the highest number for that die.
While most of the time the only dice you're going to roll in Call of Cthulhu are the percentile dice, Cthulhu does use the full 7-dice set, using the d20 for stat checks (which you can also manage with percentile dice by multiplying the stats by 5), and using various other dice for damage, and the ever-present danger of sanity loss. This Cthulhu dice set gives you all of the dice that you need to perfect the Call of Cthulhu mood.
Here at Awesome Dice, we're huge Call of Cthulhu fans. The way we play we can go entire nights only touching the dice once or twice, but we approve strongly of the Call of Cthulhu dice set. Cthulhu is a game all about mood and atmosphere. Those little details -- the soundtrack playing quietly in the background, the lowered lights, and yes even your thematic Cthulhu dice -- all help to set the mood of your Cthulhu game. It's a game of immersion, without which you quickly lose the horror. So if you love Cthulhu anything close to as much as we do, do yourself a favor and pick up a set of the Cthulhu dice.