Pokémon (ポケットモンスター, Pocket Monsters) is a highly popular RPG series developed by Tajiri Satoshi, with art by Sugimori Ken, for Nintendo handheld video game devices since 1996, and has since spawned several spinoff games, manga, and an anime series.
In the main games, the player character goes on a journey through various cities, towns and landscape (caves, forests, sea, etc.) and meets creatures known as Pokémon. The player is able to collect Pokémon to form a personalized team, train them to make them stronger, choose their known skills and command them to fight against other Pokémon. People who do that are Pokémon Trainers. Many NPCs are Pokémon Trainers available to fight against the player.
The storyline advances as the player gains eight badges for defeating different Gym Leaders and eventually challenges the Elite Four and the current Champion; defeating them all grants the player the title of Champion for himself/herself. Typical side quests, such as finding a specific item or person, are also required at certain points. Additionally, the player repeatedly fights against his or her personal rivals and routinely clashes with a criminal organization.
