This is a list of frequently asked questions in regards to the spawning mechanics of Pixelmon. Any questions in regards to setting up Better Spawner or Spawning JSONs will be linked to the appropriate page.
Questions
How is a Pokémon's rarity determined?
Why does the Wiki not use % for rarity anymore?
How does Legendary spawning work?
How does Ultra Beast spawning work?
How do I edit the spawn files?
How do I stop all spawning?
How can I stop spawns in this one area or dimension?
How does Ditto Spawn?
Ditto spawns disguised as another Pokémon. Upon successful capture there is a 0.00005% chance of the captured Pokémon turning into a Ditto. List of Pokémon that Ditto can be disguised as can be found on it's wiki page.
How does Meltan spawn?
Why are things being changed?
For the overall balance and depth of the mod changes are made to provide a better experience for all players. With the addition of new biomes, mechanics, and Pokémon; changes have to be made to adjust existing spawns to allow these new things to fit seamlessly into your world.