Originally shared by Ray Otus
[Reposted with better graphic] WHY oh why I am I thinking about this again? So … some people want to mess with the dice in Dungeon World/PbtA games so that there is no +1 or –1 but rather a D&D 5e style advantage and disadvantage. I get why. I was thinking today about different ways to do it and how much they warped the percentages. Here’s my findings.
d4/d6 method = roll d6+d4 when disadvantaged, d6+d8 when advantaged
+/- method = this is the ‘control’ group: 2d6-1, 2d6, 2d6+1
low/high method = this is the popular one, roll 3d6 and remove the highest when disadvantaged or remove the lowest when advantaged
doubles method = roll 2d6, when disadvantaged count high doubles (44,55,66) as a 6; when disadvantaged count low doubles (11,22,33) as 7
So which is the best method? Well, taste varies of course. I’m most interested in methods that produce curves close to the +/- method. To me it looks like the d4/d6 method is a good one. Which is nice because there is already a precedent (e.g. barbarian appetites move). The doubles method is good too, but too weird.
Anyway. I don’t actually think I would ever change this, but here ya go.