Nintendo 3DS marked its sixth consecutive month as the country’s best-selling video game hardware system, with more than 452,000 units sold, thanks in part to the launch of Nintendo 2DS and sales of Pokémon X and Pokémon Y. Sales of Nintendo 3DS hardware in October doubled last month’s tally, and marked the most units any portable video game system or home console has sold in a single month in 2013.

Pokémon X and Pokémon Y were the No. 1 and No. 2 top-selling titles last month, with more than 1.7 million units combined, making October the biggest month for Nintendo 3DS software all year. Total Nintendo 3DS first-party software sales hit more than 2 million units sold, the highest tally since the report for December 2011, which included sales of hit games Super Mario 3D Land and Mario Kart 7.

Best-selling software in October:

1. Grand Theft Auto V (360…