List of Pokémon by Rarity Tier

All rarity-tier values of wild-encounterable Pokémon in Pokémon Revolution Online are documented here. This applies strictly to grass- and water-encounterable Pokémon; any extraneous sources to that, such as Headbutt-encounterable Pokémon and diggable encounters, are inapplicable to this list, as they operate on completely different spawn pools and have not been vouchsafed to us in that regard.

Rarity-scale tiers

Initially there were ten rarity tiers, but they were reclassified for granular simplicity. As of the June 2021 mergence, there are only four tiers total.

Tier	Name
1	Common
2	Uncommon
3	Rare
4	Unhuntable

Only the first-three tiers—common, uncommon, and rare—encompass wildly encountered Pokémon. Tier-4, unhuntable, Pokémon might be obtainable through the game's content (i.e., quests, daily activities, and bosses), but they aren't spawnable on any wild-Pokémon terrain, surfing, or fishing.

Pokémon Lists

All rarity-tier values are designated by the most-common one known of any Pokémon in any area; this means that if Poochyena, for example, were a 4-tier in 99 areas out of 100 but a 1-tier Pokémon in the last-remaining area, 1 would be its rarity-tier value listed. For area-specific data on a Pokémon's rarity, refer to the individual article for the Pokémon or area in question.