Pokémon players have started to accumulate Pokémons and items ahead of the launch of the upcoming "Pokémon Omega Ruby" and "Pokémon Alpha Sapphire" games.

The latest Pokémon that players can work with is Mega Diancie. Diancie has been one of the most difficult Pokémons to unlock in previous gameplays. However, that is no longer the case.

Players of "Pokémon X And Y" can simply head to participating GameStop stores from Oct. 27 to Nov. 16 to get their special code card. The special code card allows players to unlock the Diancite Mega Stone. Players who are able to obtain Diancie in the game can transfer her to the upcoming "Pokémon Omega Ruby" and "Pokémon Alpha Sapphire."

This is not the first time that Nintendo is offering giveaways that players can transfer and enjoy upon the release of the upcoming Pokémon games. Earlier this month, the game company launched the demo version of the two games.

According to the company, whatever gamers gain and achieve in the demo version would be carried over or transferred to the main game upon its release. This includes items, Mega Evolution Pokémon achievements, and more. Players would have to use the Pokémon Link feature in the game to transfer the items once the official version of the game is revealed.

Both are part of the promotional strategy to build up the interest of gamers on the upcoming "Pokémon Omega Ruby" and "Pokémon Alpha Sapphire." The demo version also aims to spot the bugs and issues that surely crowd the game for the developer to fix.

"Pokémon Omega Ruby" and "Pokémon Alpha Sapphire" is set to hit Nintendo 3DS in Japan and North America in Nov. 21, while Europe will receive the game on Nov. 28. However, more details will be given to the public by the company as the release date of the game inches closer.