Wicked Things utilizes the Unisystem. (Click HERE to download the corebook.) Thankfully all of this is coded into the game you just need to tell the system what attributes, skills and/or circumstance modifiers to include.
A modifier (+#) or penalty (-#) can be added to any stat roll using +#. Example: +Roll Dexterity+Brawling+-2
Every time you make a roll on the game using one of the first two commands listed above you, and everyone in your location, will see the results listed as: '<Game> Name rolls Attribute+Skill. Result: # (Success Level)'. The # listed is the actual result of the dice roll plus any attributes, skills, modifiers and/or penalties included in the roll. This is known as the Result. The Success Level is listed in parenthesis after the result as determined by the Outcome Table.
Different tasks refer to either the Result or Success Level, this will be noted in any task specific files. When completing opposed tasks (rolling against another character or NPC) compare the Result - the person with the highest number wins.
D10, D8, D6 and D4 mean a ten-sided die, an eight-sided die, a six-sided die and a four-sided die, respectively. When a number appears before the notation, that number of such dice should be rolled, and their results should be added together.
Multipliers are expressed after the dice notation.
A number in parentheses after, or in the middle of, the notation is the average roll. This number is provided for those that want to avoid dice rolling and just get the result. So the notation D6 x 4(12) means that players who want to skip rolling just use the value 12. Some notations cannot provide a set number because their result depends on a variable factor.
Refering back to John and Tom's fist fight above...
Other System Rolls
Initiative: Who goes first?