Pokémon Gol and Pokémon Silver, released in Japan as Pocket Monsters Gold and Pocket Monsters Silver (ポケットモンスター 金・銀, Poketto Monsutā Kin, Gin?, lit. "Pocket Monsters Gold, Silver"), are two Game Boy video games. Released in 2000, these games started the second generation of the vastly popular Pokémon video game series. They feature a new region called Johto, 100 new Pokémon, and many more additions. They are also backward compatible with the first generation of games (Pokémon Red, Blue, and Yellow).