Pokémon Gold Version is a role-playing game developed by GAME FREAK and published by Nintendo for the Game Boy Color, first released in Japan in November 1999. As the second generation of the Pokémon series, it introduces the Johto region and adds 100 new species, bringing the total to 251 Pokémon. Players begin their journey in New Bark Town, choosing Chikorita, Cyndaquil, or Totodile as their starter, and set out to earn eight Gym Badges before challenging the Elite Four and Champion. New features include a day-and-night cycle that affects when certain Pokémon appear, held items, and a breeding system where Pokémon eggs hatch into new companions. After completing Johto, players can travel to Kanto, challenge its Gym Leaders, and ultimately face the previous protagonist Red atop Mt. Silver.