Nintendo commemorated the anniversary by launching 3DS Virtual Console versions of the original Pokémon Red and Pokémon Blue games in February, welcoming onetime fans back into its monster-collecting digital realm.

Originally appearing on Nintendo’s monochrome Game Boy handheld console, the Pokémon series recently celebrated its 20th anniversary, leading to a resurgence in popularity. Since launching earlier this month, Pokémon Sun and Pokémon Moon have sold a combined total of 3.7 million units in the Americas, surpassing Pokémon X and Pokémon Y‘s previous launch-window regional sales record by 85 percent.

The Pokémon phenomenon is showing no signs of stopping. Nintendo reports that its latest series sequels, Pokémon Sun and Pokémon Moon, are now the fastest-selling video games in Nintendo of America’s history, breaking the company’s previous regional sales records by a significant margin.