A tool allowing modification of the core attributes of a Pokmon game without requiring local installation or software. This functionality often includes alterations to Pokmon encounters, trainer teams, available items, and other in-game elements. For instance, an individual might choose to experience a familiar game with completely different Pokmon appearing in each area.
This provides increased replayability and a fresh challenge for players familiar with the original game. The elimination of download requirements simplifies the modification process, making it accessible to a wider audience with varying technical expertise. Historically, game modifications often involved complex procedures; this approach streamlines that process.