OOC: The Hearth
Rolling UNDER your score = Success
Rolling EXACTLY your score = Critical
Rolling OVER your score = Failure
Rolling 20 (unless your score is 20+) = Fumble
If your score is greater than 20, you add 1 to the die roll for each point above 20, so a score of 25 means 15-20 criticals, there is no chance of Failure or Fumble.