Gone are the Pokémon Centers, Shops and Gyms. Gone are the houses, villagers and friendly Professors with angry nephews. It's just you and 386 wild Pokémon. And you're pretty sure someone out there wants you very, very dead.
There's a new version of P:SI coming out as soon as I fix some bugs.
In it, you'll be able to select Gen IV and V Pokémon as starters. Still won't find them in the wild yet, but I'm working on it.