Pokémon FireRed and Pokémon LeafGreen (JP) are the enhanced remakes to the original Japanese Pokémon games (Pokémon Red and Green). Because of this, the game features the same Pokémon and storyline as the original games, giving them a nostalgic touch. They also feature many of the newer features of Pokémon, as well as an obvious graphical upgrade from the original Game Boy graphics. Pokémon Green had previously been a Japan exclusive, being replaced by Pokémon Blue in the US. Regardless, the Green remake was chosen for the US editions.
- Pressing L or R brings up a help menu. The Game Boy and Game Boy Color did not have L/R buttons.
- The graphics have been updated to 16-bit, having previously been 8-bit.
- New Pokémon were added, and the attacks for all pokémon were updated.
- All the glitches in the original games were fixed.
- Much of the dialogue was updated.
The silent protagonist of FireRed and LeafGreen is a child who lives in a small town named Pallet Town. After players start a journey and venture alone into tall grass, a voice warns them to stop. Professor Oak, a famous Pokémon researcher, explains to the player that such grass is often the habitat of wild Pokémon, and encountering them alone can be very dangerous. He takes the player to his laboratory where they meet Oak's grandson, another aspiring Pokémon Trainer. The player and their rival are both instructed to select a starter Pokémon for their travels. The rival then challenges them to a Pokémon battle with their newly obtained Pokémon and continues to battle the player at certain points throughout the games.
After reaching the next city, the player is asked to deliver a parcel to Professor Oak. Upon returning to the laboratory, they are presented with a Pokédex, a high-tech encyclopedia that records the entries of any Pokémon that are captured. Oak then asks the player to fulfill his dream of compiling a comprehensive list of every Pokémon in the game.
While visiting the region's cities, the player encounters special establishments called Pokémon Gyms. Inside these buildings are Gym Leaders, each of whom the player must defeat in a Pokémon battle to obtain a Gym Badge. Once a total of eight badges are acquired, the player is given permission to enter the Pokémon League, which consists of the best Pokémon trainers in the region. There the player battles the Elite Four. Also throughout the game, the player has to fight against the forces of Team Rocket, a criminal organization that abuses Pokémon. They devise numerous plans to steal rare Pokémon, all of which the player must foil, meeting and defeating the organization boss Giovanni.
After the first time players defeat the Elite Four, one of the members, Lorelei, disappears. After gaining access to the Sevii Islands, an entirely new region, the player discovers Lorelei in her house and convinces her to come back with them. Once more, the protagonist must thwart Team Rocket's plans on several occasions, recover two artifacts, the Ruby and the Sapphire, and put them in the main computer at One Island. After that, the player can trade with Ruby, Sapphire, Emerald, Colosseum and XD.
- Although the latest console at the time of release was the GameCube, an NES can be found in front of the player at the game start.
- This is a downgrade from the console in the players room at the beginng of the original, the SNES