"Pokémon" executive director Satoshi Tajiri first thought of "Pokémon", albeit with a different concept and name, around 1989, when the Game Boy was released. The concept of the Pokémon universe, in both the video games and the general fictional world of "Pokémon", stems from the hobby of insect collecting, a popular pastime which Tajiri enjoyed as a child. Players are designated as Pokémon Trainers and have three general goals: to complete the regional Pokédex by collecting all of the available Pokémon species found in the fictional region where a game takes place, to complete the national Pokédex by transferring Pokémon from other regions, and to train a team of powerful Pokémon from those they have caught to compete against teams owned by other Trainers so they may eventually win the Pokémon League and become the regional Champion. These themes of collecting, training, and battling are present in almost every version of the Pokémon franchise, including the video games, the anime and manga series, and the Pokémon Trading Card Game.