Pokémon FireRed Version (ポケットモンスターファイアレッド, Pocket Monsters FireRed) and Pokémon LeafGreen Version (ポケットモンスターリーフグリーン, Pocket Monsters LeafGreen) are remakes of the Pokémon Red and Blue games. These games, like the original, take place in the Kanto region and also includes the Sevii Islands which were not in the original. Though these games are remakes of the Generation I games, they are considered to be Generation III games, now with better graphics and many new features.

The player character starts out in Pallet Town. When the player character tries to leave the town without a Pokémon of their own, they are stopped in the nick of time by Professor Oak, who invites them to his lab. There, he gives them a Pokémon of their own and a Pokédex, telling them about his dream to make a complete guide on every Pokémon in the world. After the player character battles their rival and leaves the lab, they are entitled to win every Gym Badge, compete in the Pokémon League, and fulfill Oak's dream by catching every Pokémon.