Thread by @delaneykingrox

#ttrpgHomebrew in today's homebrew cook up, let's look at making dnd more Satanic.

https://twitter.com/delaneykingrox/status/1473466205881004033

So that maths is wrong, I forgot that 666 is the only triple we want in the result, so it is 1/216, not 6/216

That said, that very mechanic can give you a slightly better dice curve in dnd.

The sum of 3d6 gives you between 3 and 18 on a bell curve. This means you are most likely to roll somewhere around 9ish and least likely to roll 3 or 18.
GURPS uses this as the basic mechanic

Where a d20 gives you 1-20 with an equal chance of every result- a linear chance, a bell curve models that most of the time you will get an average result.

But 3d6 gives you a few other results that are useful too- where a critical nat 20 happens 1/20 times on a d20...

...a triple result on 3D6 happens 1/36... not only making it more special, but with the added bonus of granularity. You have six different triples possible, giving you six grades of outcome.

Rolling 18 (6,6,6) is therefore the best outcome you can get... the most metal, the most badass.

Rolling 1,1,1 (3- or the trinity) is the worst you can possibly do.

With that in mind, #Mörkborg players may enjoy switching to 3d6 for that juicy, juicy 1/216 chance of a 666.

So recap:

3D6 + stat bonus = result.
Triples = critical hit
111 = worst roll
666 = ultra metal critical

And remember kids, Santa is an anagram of Satan.