Dice Roll
When performing any uncertain action (such as an attack or skill check), you must roll the dice to determine the success or failure of that action. You roll one d20 die and add the appropriate bonuses. Usually these are bonuses received for having a high attribute and or related to proficiency (in a skill or weapon).
If the total amount is equal to or higher than the Difficulty Level, the test succeeds. Otherwise, it fails.
Difficulty levels range between 6 and 30.
Title | Difficulty Level | Example |
|---|---|---|
Easy | 6 | Hiding in the woods at night |
Medium | 12 | Leaping over two-meter chasm |
Hard | 18 | Tracking in the rain |
Challenging | 24 | Walking on a rope |
Nearly Impossible | 30 | Climbing a smooth wall |
Bonuses
All attribute, skill or attack checks can have certain bonuses which add to d20 roll. There are usually three types of bonuses:​
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Bonus from Attribute associated with the check
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Proficiency Bonus in a skill or weapon
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General proficiency in a group of skills or type of attack (melee or ranged)
​Each type of bonus has a maximum value of +6, so the overall bonus can reach a maximum of +18.
Critical Success
Rolling a 20 on a d20 means that the action was executed nearly perfectly. If in some cases it still ended up in a failure roll an additional d6 and add its number to the result.
Proficiency
Proficiency means how specialized a character is in a given task. There are three levels of proficiency: Basic, Advanced and Master.
If you’re untrained, your proficiency bonus is +0. If you’re trained, your proficiency bonus equals +2, +4 or +6 respectively.
Advantage and Disadvantage
Sometimes characters can receive a special bonus (or penalty) not related directly to their abilities. This can happen in any situation whether it is a skill test or an attack and is called an Advantage or Disadvantage.
Advantage
Occurs in a positive situation and has a Level of Advantage that ranges from 1 to 5. Roll an additional d6 dice in an amount based on the Level of Advantage, choose the highest number and add it to the d20 roll. Next, for each additional 6, increase the result by 1. For example if you roll two 6, you increase your d20 roll by 7.
Disadvantage
Occurs in a negative situation and unlike the advantage has only one level. Roll an additional d6 die add subtract it from d20 roll.
If you have both Advantage and Disadvantage you lower your Level of Advantage by 1. However if you gain Disadvantage from two sources you cannot gain Advantage even if your final Level of Advantage is higher than 0.
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