Pokemon X and Pokemon Y combined sold more than four million units across Japan, Europe and The Americas during its launch weekend, Nintendo has announced.

"The early response to Pokemon X and Pokemon Y not only reaffirms the ongoing passion of Pokemon fans, but also indicates that an entirely new generation of gamers are eager to experience the franchise for themselves," said Nintendo president Satoru Iwata.

When combining and comparing regional data for previous launches, Pokemon X and Pokemon Y would be the fastest-selling Nintendo 3DS title of all time and is tracking ahead of the last Pokemon RPG title, Pokemon Black 2 and Pokemon White 2, by more than 70 percent.

Since 2002, five sets of Pokemon titles have combined to exceed 10 million units sold worldwide, with three sets combining to surpass 15 million units. That list includes:

Pokemon Diamond and Pokemon PearlNintendo DS17.63 Million

Pokemon Ruby and Pokemon SapphireGame Boy Advance16.22 Million

Pokemon Black and Pokemon WhiteNintendo DS15.42 Million

Pokemon HeartGold and Pokemon SoulSilverNintendo DS12.67 Million

Pokemon FireRed and Pokemon LeafGreenGame Boy Advance12 Million

Source: Press release