Pokémon Yellow Version/Changes from Red, Green, and Blue/Storyline Changes


 * The chain of events leading to the player obtaining the starter is slightly different:
 * The player now takes one step further into the tall grass before Professor Oak comes along. Now himself standing in the tall grass, Oak encounters a wild Pikachu and immediately catches it before leading the player back to his laboratory.
 * Instead of giving the player and the choice between, , and , Professor Oak tells player to take the single Poké Ball on his desk, containing , but Blue shoves the player out of the way and takes the Poké Ball instead. Oak then gives the player the only Pokémon he has on hand: the Pikachu he has caught before, which, after the first battle against Blue, immediately breaks free from its Poké Ball and follows the player on foot from this point onward.
 * The in Viridian City now must be spoken to before going to Viridian Forest. He attempts to demonstrate how to catch a Pokémon, fails and leaves to get more Poké Balls from the Viridian Poké Mart. The player can visit the Poké Mart to ask him to repeat the tutorial.
 * Jessie and James appear throughout the game, replacing Grunts from the previous games in four different places. They are involved in Team Rocket's scheme and are typically found before a battle with Giovanni. Though they are named "Rocket" like any, they have distinct overworld and in-battle sprites.