Pokémon Red and Green, the first games in the Pokémon series, were released in Japan for the Game Boy.
An improved version called Pokémon Blue was released in Japan featuring updated graphics and dialogue.
Pokémon Yellow: Special Pikachu Edition, an enhanced version inspired by the Pokémon anime, was released in Japan.
Pokémon Yellow was released in North America, featuring updated graphics and Pikachu following the player.
The player receives their first Pokémon from Professor Oak in Pallet Town, beginning their journey as a Pokémon Trainer.
The player defeats Brock, the Pewter City Gym Leader, earning their first Gym Badge: the Boulder Badge.
The player defeats Misty, the Cerulean City Gym Leader, earning the Cascade Badge.
The player encounters members of Team Rocket for the first time, a criminal organization causing trouble across Kanto.
The player defeats Lt. Surge, the Vermilion City Gym Leader, obtaining the Thunder Badge.
The player receives the HM01 Cut, allowing them to remove obstacles and reach new areas.
The player defeats Erika, the Celadon City Gym Leader, earning the Rainbow Badge.
The player discovers and infiltrates the Team Rocket Hideout beneath the Celadon Department Store to thwart their plans.
The player defeats Koga, the Fuchsia City Gym Leader, earning the Soul Badge.
The player encounters and captures the legendary Ice-type bird, Articuno, in the Seafoam Islands.
The player defeats Sabrina, the Saffron City Gym Leader, earning the Marsh Badge.
The player repairs the S.S. Anne's cable car and gains access to Indigo Plateau, the site of the Pokémon League.
The player confronts and defeats Giovanni, the leader of Team Rocket, ending their criminal activities in Kanto.
The player defeats Blaine, the Cinnabar Island Gym Leader, earning the Volcano Badge.
The player defeats the Viridian City Gym Leader and earns the Earth Badge, completing the set of eight Gym Badges.
The player challenges the Elite Four and the Champion at Indigo Plateau to become the Pokémon Champion.
