Dice
First dice type (mandatory)
Second dice type (optional)
Third dice type (optional)
Modifier
Minimum target score
Number of simulations
Distribution of scores
NOTE: For the histogram of the simulation to look right, the minimum target score must be within the range of the sum of the dice rolled and the modifier. For example, when rolling 1d20 + 3 the result can only be between 4 and 23. If you select a minimum target score smaller than 4 or greater than 23, the histogram will look strange, although the probability (shown below) will be correct