Pokémon Red Version and Blue Version[a] are role-playing video games developed by Game Freak and published by Nintendo for the Game Boy. They are the first installments of the Pokémon series. They were first released in Japan in 1996 as Red and Green. "Blue" was released later in the year as a special edition. They were later released as Red and Blue in North America, Europe, and Australia over the following three years. Pokémon Yellow, a special edition version, was released roughly a year later. Red and Green have subsequently been remade for the Game Boy Advance as Pokémon FireRed and LeafGreen, released in 2004.