um u finish the game and that's it
And not a lot happens, you can still play, collect more Pokemon train, beat elite four again........quite boring after that
You collect all eight badges, and then you challenge and beat the Elite Four.
Mr. Fuji gives it to you after you beat Team Rocket in Pokemon Tower.
go to the building in celadon with all the people in it, and where you got eevee, and go to the room with the guys who "made the game" talk to one of them and he will give you a diploma. YOU BEAT POKEMON!
ya u can trade Pokemon in blue before u beat the elite four.
you have to finish the team rocket part in Silph co. and beat Giovanni.
To beat the Pokemon Leaf Green version for Gameboy you have to get the Nation Dex and beat Raiku and Suicune.
Finish your Pokedex And Beat The Elite Four once then the second time they have stronger Pokemon
you fill your pokedex
the Pokemon have levels not you
Actually, there is such a thing as Pokemon Blue Sea version. It's a hack and it pretty much all in Spanish. As for what to do after you beat Whitney, I have absolutely no idea! I just found this version today and got to where you are and am stuck as well... I can't find cut, though it would probably help if I spoke Spanish. Good luck
After you beat the Pokemon league then you beat the volcano after that you just train forever!!!!!!!!!!!!
after beating alder and seeing or catching all Pokemon