FUDGE ALTERNATE DICE DISTRIBUTION APPLET

Background & Using the Applet

One of the on-going topics of discussion on the FUDGE (Free Universal Donated Game Engine -a set of table-top roleplaying rules that is independent of genre) mailing list is that of alternate dice methods.

Some people desire methods with a smaller standard deviation (more tightly centred about the mean) than the standard 4 FUDGE dice. Others want the opposite or some sort of hybrid. Many alternatives have been discussed.

The following applet allows the interactive visual exploration and comparison of many of the schemes proposed. Up to four different distributions (dice methods) can be displayed simultaneously in a variety of colours. Simply use the pull-down choice boxes on the right of the graph to select the method (and colours) of interest.

If the above applet is not working then it is likely that your Browser does not support Java 1.1 but the older 1.0. I have another version of this page who's applet supports the older language features (Event model). Therefore try it if nothing is being displayed. However, be warned that that page may be out-dated.

The Data

Most of the data is based on Mike Harvey's excellent FUDGE Dice Probability Tables. If you want the hard data or code for generating the distributions then go take a look.

Notes on Dice Rolling Methods

The short-hand notation adopted by the FUDGE mailing list to describe dice rolling methods has been adopted. The basic notation is nds, to be read as: roll n dice of type s (where s is usually the number of sides) and add their totals together.

dF are FUDGE dice: a six-sided dice which is marked with two +1s, two 0s and two -1s. For instance 3dF means roll 3 Fudge dice and add their totals together (yielding a result between -3 and +3 inclusive).

To the end of the description of non-FUDGE dice is added the number of sides that are positive. The same number are negative and the rest of the sides are treated as zero. For instance d6.1 is a six-sided dice with one side marked +1, one side marked -1, and the other four marked zero (i.e., the sides are {-1,0,0,0,0,+1}).

Finally, its also possible to use other values than +1 and -1 only. In these cases the notation records the number number of each value. For instance d12.3.1 means a twelve sided dice with three sides that are marked positive. One of those is a +2 and the other two (3-1) are +1s {-2,-1,-1,0,0,0,0,0,0,+1,+1,+2}.


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