Damage roll

Damage roll is the random factor applied to each damaging hit, so the same move can deal a range of damage

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Generations I and II multiplied damage by a random integer from 217 to 255, divided by 255. From Ruby and Sapphire the factor is one of 16 values from 85 to 100 percent. A move with a 15 percent spread can decide whether a hit knocks out a target.

Main-series games; introduced in Generation I, Red and Green.