The franchise began as Pokémon Red and Green (later released outside of Japan as Pokémon Red and Blue), a pair of video games for the original Game Boy that were developed by Game Freak and published by Nintendo in February 1996. It soon became a media mix franchise adapted into various different media. Pokémon has since gone on to become the highest-grossing media franchise of all time, with $90 billion in total franchise revenue. The original video game series is the second best-selling video game franchise (behind Nintendo's Mario franchise) with more than 340 million copies sold and 1 billion mobile downloads, and it spawned a hit anime television series that has become the most successful video game adaptation with over 20 seasons and 1,000 episodes in 169 countries. In addition, the Pokémon franchise includes the world's top-selling toy brand, the top-selling trading card game with over 27. 2 billion cards sold, an anime film series, a live-action film, books, manga comics, music, merchandise, and a theme park. The franchise is also represented in other Nintendo media, such as the Super Smash Bros. series.