Alphanumeric strings designed for use with a specific peripheral device, these inputs alter the behavior of the Pokemon Crystal game. These alterations can range from modifying in-game currency to influencing encounter rates with particular creatures. For instance, a user could input a sequence that grants an unlimited supply of rare candies or ensures every wild Pokemon encountered is a shiny variant.
The implementation of these codes offers users the ability to customize their gameplay experience, bypass sections of the game, and experiment with its underlying mechanics. Historically, such code systems were popular among players seeking to overcome challenges or discover hidden aspects of the game that might otherwise remain inaccessible through conventional play. This capability extended the lifespan and replayability of titles for many users.