The special "Liberate the Tower" Wi-Fi mission for Pokémon Ranger: Shadows of Almia is now available for players in both America and Europe. Once you complete this mission, you are able to obtain a special Darkrai that can be sent over to your Diamond & Pearl carts. The mission can be accessed now by entering Ranger Net. It is unknown how long this mission will be available for, so be sure to complete the mission now if you want to get the special Darkrai.