This material is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.
## DICE NOTATION

These rules use the following die notations:

- d4 = four sided die
- d6 = six sided die
- d8 = eight sided die
- d10 = ten sided die
- d12 = twelve sided die
- d20 = twenty sided die
- d% = percentile dice

Die rolls are expressed in the format:

[#] die type [+/- modifiers]

Example: 3d6+2 means: "Roll 3 six sided dice. Add the result of the
three dice together. Add 2."
## ROUNDING FRACTIONS

In general, if you wind up with a fraction, round down, even if the
fraction is one-half or larger.

Exception: Certain rolls, such as damage and hit points, have a
minimum of 1.

## MULTIPLYING

Sometimes a special rule makes you multiply a number or a die roll. As
long as you're applying a single multiplier, multiply the number
normally. When two or more multipliers apply, however, combine them
into a single multiple, with each extra multiple adding 1 less than
its value to the first multiple. Thus, a double (x2) and a double (x2)
applied to the same number results in a triple (x3, because 2 + 1 =
3).

## BASIC TASK RESOLUTION SYSTEM

These rules assume a standardized system for determining the success
or failure of any given task. That system is:

d20 + Modifiers vs. Target Number

The Modifiers and Target Number are determined by the type of task.
If the result of the d20 roll + the Modifiers equals or exceeds the
Target Number, the test is successful. Any other result is a failure.

A "natural 20" on the die roll is not an automatic success. A "natural
1" on the die roll is not an automatic failure, unless the rules state
otherwise.