
Atlas Games' Rune RPG uses the following dice rules:
Roll 1d10.
If the result is a 10, roll again and add the new result to the current total. Continue until you don't roll another 10.
If the result is a 1, roll again and subtract the new result from 0. If this new result is a 10, explode negatively (implode?) until you don't get any more 10s.
Roll20 can do exploding dice with "!": 1d10!
Can it do the "imploding" part? Without API? (I'm thinking not.)
Roll 1d10.
If the result is a 10, roll again and add the new result to the current total. Continue until you don't roll another 10.
If the result is a 1, roll again and subtract the new result from 0. If this new result is a 10, explode negatively (implode?) until you don't get any more 10s.
Roll20 can do exploding dice with "!": 1d10!
Can it do the "imploding" part? Without API? (I'm thinking not.)