The phrase refers to the acquisition of a modified version of a classic video game through file transfer. It specifically implies obtaining a read-only memory (ROM) file of a Nintendo game that has been altered, combined, or otherwise changed from its original form, typically featuring elements from both the Super Mario and Pokmon franchises. An instance of this would be locating and saving a file containing a game that blends characters and gameplay mechanics from the two aforementioned series.
The phenomenon gains traction from the enduring popularity of both intellectual properties, fueling a desire for novel gaming experiences. The result of the action provides access to custom-made games that were not officially released, and therefore, are a product of the fan community. Its relevance is tied to the preservation and modification of older games, allowing for continued engagement and creative expression beyond the original intent of the developers. It further speaks to how video game modification allows gamers to extend the lifespan and add fresh content to software long after the original product cycle has ended.