On what date were Pokémon X and Y released worldwide simultaneously?

Pokémon X and Y were released worldwide simultaneously on October 12, 2013.

The Nintendo 3DS role-playing games marked the beginning of Pokémon's sixth generation. Their simultaneous global launch was a major change from the staggered regional releases used by many earlier Pokémon games.

X and Y introduced the Kalos region, Fairy-type Pokémon, Mega Evolution, character customization, and fully polygonal 3D visuals for the main adventure. The games also added the starter Pokémon Chespin, Fennekin, and Froakie, along with the Legendary mascots Xerneas and Yveltal.

The release date is sometimes remembered as a regional date because earlier games arrived months or years apart outside Japan. X and Y instead reached Japan, the Americas, Europe, and other territories on the same calendar date, making October 12, 2013 an important milestone in the franchise's international release history.