Start/End Dates	2012-11-21 through 2013-01-10
Country	Japan

Details

To celebrate the 10th anniversary of Pocket Monsters Ruby and Sapphire, players of the Japanese versions of Pocket Monsters Black 2 and White 2 could receive Groudon or Kyogre. Pokémon Centers and participating retailers across Japan including Ion, Ito, Daiei, Toys R Us, Al Plaza, Heiwado, Fuji, Apita, Piago distributed these Pokémon. Players that have Black 2 were able to receive Groudon. Players that have White 2 were able to receive Kyogre.


Source: http://twitpic.com/bd3vis

Official Site Update

The official Japanese Pokémon website updated on Thursday November 15th, with further information regarding this event. Both Groudon and Kyogre are level 100. Groudon knows the following moves: Eruption, Hammer Arm, Earth Power and Solarbeam. Kyogre knows the following moves: Water Spout, Thunder, Ice Beam and Sheer Cold.


Source: http://www.pokemon.co.jp/ex/10thanniversary/