Anything that meets one or more of the following requirements is rare:
*Has a less than 10 percent chance of appearing at any time, i.e. it's highest chance of appearing in any evolutionary form is 10%.
Ex. Munchlax in DPPt, Chimecho in RSE, Cryogonal in BW
*There is a limited number of them or less in the specific game.
Ex. Snorlax in RBY, Castform in RSE, Sudowoodo in HGSS.
*They are classified as legendary.
Ex. Dialga, Palkia, Giratina
*They are Shiny.
Ex. Any Shiny, Red Gyarados from GSCHGSS
*THey are obtained through event only.
Ex. Mew, Celebi, Manaphy.
*Has a less than 10 percent chance of appearing at any time, i.e. it's highest chance of appearing in any evolutionary form is 10%.
Ex. Munchlax in DPPt, Chimecho in RSE, Cryogonal in BW
*There is a limited number of them or less in the specific game.
Ex. Snorlax in RBY, Castform in RSE, Sudowoodo in HGSS.
*They are classified as legendary.
Ex. Dialga, Palkia, Giratina
*They are Shiny.
Ex. Any Shiny, Red Gyarados from GSCHGSS
*THey are obtained through event only.
Ex. Mew, Celebi, Manaphy.