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What Is D&D?



More About the Core Mechanic

Characters accomplish tasks by making skill checks, ability checks, or attack rolls, using the core mechanic.

What is the core mechanic?

D&D uses a core mechanic to resolve all actions in the game. This central game rule keeps play fast and intuitive.

Whenever you attempt an action that has some chance of failure, you roll a twenty-sided die (d20). To determine if your character succeeds at a task (such as attacking a monster or using a skill), you do this:

  • Roll a d20.
  • Add any relevant modifiers.
  • Compare the result to a target number.

If the result equals or exceeds the target number (set by the DM or given in the rules), your character succeeds. If the result is lower than the target number, your character fails.

What Is D&D? -- Main Page

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