No, the only games with multiple regions to travel between are gold, silver, crystal, heartgold, and soulsilver.
you go to the harbor and take a boat to the hoenn region
No, you cannot. Pokemon Ruby is solely based in the Hoenn Region, and you cannot go to any other region.
In Pokemon Platinum you can't go to any other (that includes Kanto) region. I know it's upsetting, but you can still have fun by catching uncommon Pokemon!
having a poekmon game with kanto region or cheats
You cannot go into any other floors except for the very first floor in the Kanto Radio Tower in Lavender Town.
no you can't go to kanto or any other regions!
You can't get there because you can only go to johto and kanto.
u get to go to the Kanto region after you defat the eliet four
no
Go to the kanto region and go to lavender town radio station and you will get it there
Impossible your in the unova Region
You can go and challenge other Gym Leaders in the Kanto region, such as Brock.