These are alphanumeric strings designed to manipulate the game’s memory, enabling alterations to gameplay in Pokmon Crystal. Functionality includes acquiring rare items, modifying character attributes, and encountering specific Pokmon. For example, a sequence might force the appearance of a Shiny Pokmon, or instantly grant the player all available badges.
They provided an avenue for players to customize their experience beyond the intended design, offering increased control and expediting progress. Their availability stemmed from the desire to overcome difficulty spikes, experiment with different team compositions quickly, or simply inject novel elements into a familiar game. The use of these codes allowed for exploration of game mechanics that would otherwise require significant time investment or skillful play.