I've been meaning to make an updated version of this for a while so here it is, every numerically-balanced d20 layout!
Feel free to share, especially with any dice makers you think may be interested!
There is a more detailed explanation video by @henryseg for The Dice Lab (which use layout C, if you're curious!) https://youtu.be/Nh2H_4g6evc
@Sophie@dice.camp @henryseg@mathstodon.xyz show us an evil unbalanced dice
@Stellar tbh I don't think I have any less balanced d20s that don't use the standard (apart from some gamescience ones, and I don't have the energy to check the math on them rn)
But, how about a gamescience d12 with one half as unbalanced as numerically possible?
@Stellar (technically, a d12 layout can't be balanced in all the ways a d20 can, but this one for sure is almost as bad as it could be without adding extra '1's.)