There are two maps you can play,the kanto ,and johto region. Every maps has its own poke-center,pokemart,and gyms. You must collect all the gym badge and defeat all the gym leaders to unlock the Elite 4 .The elite four has powerfull pokemon stronger than other gym leaders. On your way from new bark town you can capture pokemons and make friends with it.You can level up by defeating trainers pokemon ad gym leaders.Then if you defeat this game you can be the ultimate pokemon master of the game. You can play this in a psp,1,2,3 gameboy,and pc (gba version) . The next version of this games is the pokemon fire red.(note: there are many other pokemon games and to be review very very soon just drop by in this website for more reviews.