These alphanumeric strings, when used with a specific peripheral device, alter the programmed behavior of a Game Boy Color game. For example, a code could modify a character’s stats, grant access to normally inaccessible areas, or change the properties of items within the digital world of a popular monster-collecting role-playing game from the year 2000.
Their significance lies in providing players with a customizable experience. They can circumvent difficulty, explore the game in unconventional ways, or experiment with otherwise unattainable scenarios. Historically, such codes offered a method to bypass limitations imposed by the original software, extending replayability and providing an alternative to standard gameplay. They were particularly useful before widespread internet access allowed for easy access to walkthroughs or other assistance.