Which handheld console was the original Pokémon Gold and Silver designed for?

The original Pokémon Gold and Silver were designed for the Game Boy Color. They were developed by Game Freak and published by Nintendo as the second-generation Pokémon role-playing games.

Gold and Silver used the Game Boy Color's color capabilities to create a more vivid world than the original Game Boy games. They also introduced a real-time day-and-night cycle, with events and encounters changing according to the time shown by the system's internal clock.

The games remained compatible with the broader Game Boy family in important ways, but their primary platform identity was the Game Boy Color. Their release helped demonstrate that Pokémon could continue successfully on Nintendo's updated handheld hardware.

The pair launched in Japan in 1999, reached Australia and North America in 2000, and arrived in Europe in 2001. Enhanced remakes, Pokémon HeartGold and SoulSilver, were later released for the Nintendo DS in 2009 and 2010.