This year Nintendo announced it would be bringing a brand new Pokémon title to the 3DS in the form of Pokémon X & Y. This new iteration breaks the mould set by previous games and incorporates full 3D environments instead of the conventional top-down view we're all used to.

Of course, Pokémon Black & White Version 2 was released towards the end of 2012 and has sold 7.81 million copies since then, but it appears people are still buying the older Pokémon titles - perhaps spurred on by the announcement of the upcoming 3DS release.

Siliconera recently dug up some interesting worldwide sales figures for three Pokémon titles: Pokémon Diamond & Pearl, Pokémon HeartGold & SoulSilver and Pokémon Black & White.

In the year ending 31st March 2013, Pokémon Diamond and Pearl managed to sell 20,000 more copies to hit 17.63 million, which is quite impressive for a game that was released six years ago.

Pokémon HeartGold & SoulSilver, which was released in 2010, saw a massive surge with an extra 270,000 copies sold, taking the total to 12.67 million, while Pokémon Black & White recorded a further 710,000 copies - 15.42 million overall.

Adding all these sales together rounds nicely to one million for the year, which is a staggering amount for games that have been around for a while.

Clearly people are still enjoying the older generation of Pokémon games as they gear up for the big 3DS release this October.

What are your thoughts on this? Are you one of the million people who picked up an older Pokémon game? Let us know in the comment section below.