Evolution trigger/condition for region-specific evolutions

[ratquaza]

Small request, but possibly adding an evolution-trigger or evolution detail that specifies that a certain evolution is unique to a specific region only. For example, Meowth's evolution data lists that they can evolve into either Persian or Perrzerker, but there is nothing that specifies Perrzerker's evolution being locked to Galar only, or that the evolution only works on a Galarian Meowth.

[Naramsim]

We can add it to the evolution chain.

What are the exact conditions for both evolutions?

[ratquaza]

Meowth must be level 28 and its Galar variant in order to evolve to Perrserker.

[joseph-bayer]

Are there any updates to this?

I don't see a way to tell which form Perrserker evolves from in the evolution chain api call. Maybe there's an alternate solution I'm not seeing?

[dpMelian]

I second this petition. In my app I display a list of the evolution line but I have no way to distinguish between Slowbro and Slowbro Galar's evolution triggers. From what I can see I think the result is in order, i.e. the first object is Slowbro and the second one is Galar's form but maybe this is not the case for every single Pokémon variant. I think adding a variant reference inside the evolution_details would be really useful

[Naramsim]

I'll promote this to a help wanted issue and pin it to the top. Maybe some volunteers will show up.

[novadragonDOTspace]

Basically any issue here should have the label of "Help wanted", cause the amount of users far eclipses the amount of helpers that actually contribute.

Data from Galar, Hisui and Paldea basically doesnt exist besides actual stats and names that got extrated from the games.

[joereg4]

The existing PokeAPI structure already supports most regional evolution requirements!

Existing Fields That Already Work

location - For location-specific evolutions (Galarian Yamask → Runerigus)
evolution_item - For item-based evolutions (Galarica Cuff, Black Augurite)
min_level - For level-based evolutions (Galarian Meowth → Perrserker)
time_of_day - For time-based evolutions (Linoone → Obstagoon at night)
needs_overworld_rain - For weather-based evolutions (Sliggoo → Goodra in rain)

What's Missing: Two Key Fields

1. Region Restriction - The ability to specify that an evolution can only occur in a specific region
2. Base Form Required - The ability to specify which specific form is required for evolution

For example, the current system can't distinguish between:

• Regular Slowpoke → Regular Slowbro (with Water Stone, any region)
• Galarian Slowpoke → Galarian Slowbro (with Galarica Cuff, Galar region only)