Alphanumeric sequences, specifically designed for use with a peripheral device, modify the behavior of the original Pokmon Yellow game. These codes allowed players to alter aspects of the gameplay, such as encountering specific Pokmon, increasing item quantities, or adjusting character stats, by temporarily changing the game’s underlying code. An example is a code that forces all wild Pokmon encounters to be a specific species, such as Pikachu, or one that grants infinite Rare Candies.
The significance of these codes lies in the expanded possibilities offered to the player. They provided a way to overcome challenges, experiment with different strategies, and explore the game world in unconventional ways. Historically, these codes were popular because they offered a form of personalization and control over the gaming experience at a time when in-game customization options were limited. This gave players an advantage in game, made it easier, or they just used them to make the game funny.