Critical

A Critical action in games is an action that produces more then the normal.

Critical Hit

In some roleplaying games a critical hit is when an attack does something devastating to the foe on the opposing end of the blow. To show such a result the damage is multiplied by some value or the damge rolled is maximized instead. Critical hits are usually determined by rolling the highest value in roll over systems or lowest value in roll under systems on the dice used to reach a conclusion. Some abilities may also cause an attack to auto crit, or automatically count as a critical hit.