Pokemon Sienna GBA ROM Hack Video Game Custom Gameboy AdvanceThis game uses Pokemon FireRed as a base. The story takes place in the Kanto Region where your character applies to become a trainer in the Indigo Plateau. Unfortunately, your application would be denied, but thats okay. This leads to you starting your own adventure as you trek through Kanto and other Regions to become the best Pokemon trainer there is. Features The Pokemon lineup in this game is a bit unclear because, for the majority of the roster,