Pokémon Red Version, Blue Version, and Yellow Version - Stat stages

Tags: pokemon-red-blue-and-yellow, battle-system, in-depth-guides, statstages

Stat stages refer to levels that raise or lower stats during a battle. Each stat stage has 13 different levels.

The term "stat stages" refers to those for Attack, Defense, Speed, Special, Evade and Accuracy.

At the start of a battle, each Pokémon’s stat stages begin at 0. The stat stages for a Pokémon are reset to 0 when the Pokémon leaves the battle,. Each stat stage can’t go lower than -6 or higher than 6.

To apply stat stages, multiply the stat by the stat multiplier for the corresponding stat stage.

An attack’s accuracy is multiplied by its user’s Accuracy multiplier, as shown in the table above, and multiplied by its the opposing Pokémon’s Evade multiplier, as shown in the table above. If the accuracy is 0, it becomes 1. If it’s greater than 255, it becomes 255. The attack will hit if a random integer from 0 through 255 is less than its accuracy. The moves Bide and Swift, however, ignore accuracy checks and will always hit.

Stat Modification

• An effect that raises Attack, Defense, Special, or Speed will do nothing if the stat stage for the corresponding stat is +6, or if the corresponding stat is 999.
• An effect that lowers Attack, Defense, Special, or Speed will do nothing if the stat stage for the corresponding stat is -6, or if the corresponding stat is 1.
• When an effect reduces a Pokémon’s Accuracy, Attack, Defense, Evade, Special, or Speed stat stage, the new value of the stat being reduced is the original stat modified by stat stages, badges, paralysis, and burns, but not less than 1 or greater than 999; and the new value of other stats is the current stat modified by badges, paralysis, and burns, but not less than 1 or greater than 999. (Evade and Accuracy are not stats.)
• When an effect raises a Pokémon’s Attack, Defense, Special, or Speed stat stage, the new value of the stat being raised is the original stat modified by stat stages and badges, but not greater than 999; and other stats remain unchanged.
• When a Pokémon enters the battle, the value of each of its stats is the original stat modified by badges, paralysis, and burns, but not less than 1 or greater than 999.
• When an effect paralyzes or burns a Pokémon, the current Speed or Attack, respectively, is reduced to 1/4 of its previous value, rounded down, but not less than 1, and other stats remain unchanged.
• When Transform is used, the opposing Pokémon’s Attack, Defense, Special, and Speed stats, as determined in the preceding sentences, are copied and the user’s current stats become equal to those values, and the opposing Pokémon’s original Attack, Defense, Special, and Speed stats are copied and the user’s original stats become equal to those values until Transform’s effect ends.
• Using Haze (by either Pokémon in battle), using an item to cure poison, burn, paralysis, freezing, or sleep, and gaining a level (after calculating new stats) each reset the stats to their original unmodified values.
• Using Rest doesn’t recalculate stats.