Pokemon Flora Sky Rebirth is a mod of pokemon emerald game. After the battle between Dialga and Palkia, the portal between Giratina’s dimension and the real world was opened. Giratina appears, causing great damage to the real world. You must close the portal before it is too late. However, the Magma and Aqua team seek a Fire and water type Pokémon to take over the world.
Here´s gameplay video by Pokemoner.com