Hi! I want to first quickly mentioned I merged both of your posts together as your first post wasn't either a chapter index or part of your story. Having a prologue like you have there is fine in your first post and then the first chapter next post. Just letting you know!
A quick couple other things:
When the Great Arceus created this world, he also created Dungeons, which some Pokémon then grew toinhabit.
"to inhabit", I think.
One suggestion concerning posting in forums is to double space whenever you have a new paragraph to make your story more noticeable. For instance:
The world of Pokémon in which this tale is set, where the inhabitants live without bossy human trainers or being held captive inside capsule-like red and white balls,has been around long since the beginning of creation. When the Great Arceus created this world, he also created Dungeons, which some Pokémon then grew toinhabit. These dungeons are said to change every time you enter or exit, and are also said to be home to some very vicious and powerful Pokémon. Other Pokémon explore these dungeons in search of riches and treasure.
This is a story of three heroes of Prophecy, who saved the world of Pokémon from annihilation on one occasion. One was of the Grass Type, one of Fire Type, and one of Water Type. These three heroes and their group of allies worked together in order to protect the world and keep the peace.
You would separate like this:
The world of Pokémon in which this tale is set, where the inhabitants live without bossy human trainers or being held captive inside capsule-like red and white balls,has been around long since the beginning of creation. When the Great Arceus created this world, he also created Dungeons, which some Pokémon then grew toinhabit. These dungeons are said to change every time you enter or exit, and are also said to be home to some very vicious and powerful Pokémon. Other Pokémon explore these dungeons in search of riches and treasure.
This is a story of three heroes of Prophecy, who saved the world of Pokémon from annihilation on one occasion. One was of the Grass Type, one of Fire Type, and one of Water Type. These three heroes and their group of allies worked together in order to protect the world and keep the peace.
See how that's easier to read?
Since this is only a prologue, I can't say much more of the story at this point. It does have potential, though, and since you've been working on it for a while now, I'm sure it'll be cool nonetheless. If I get the chance I might be able to check out more of it soon!