I'm afraid not, unless there is a code you can use that I don't know about. But if there isn't a cheat code, Kanto and Johto are the only regions.
johto and kanto
I don't think you can.
You can't get there because you can only go to johto and kanto.
basically its every Pokemon from the kanto region to the johto to hoen region
== ==
Get all gym badges of Johto and defeat the Pokemon league. Then you have access to the Kanto Region.
you trade with others who has the kanto, johto, or other hoen regions
you start out in the johto region if you mean kanto you have to beat all the gym leaders and the elite 4
493 Pokemon total Kanto:151 Pokemon Johto: 100 Pokemon Hoen: 135 Pokemon Sinnoh:107 Pokemon
The Johto region of the Pokemon world is located west of Kanto and south of Sinnoh. Landmarks in Johto include the Ruins of Alph, the Burned Tower, and the Slowpoke Well.
1. kanto 2 johto 3hoenn 4sinnoh
NO only kanto and johto