The phrase refers to a modified version of the Nintendo DS game Pokmon HeartGold, distributed as a ROM file (a digital copy of the game) compressed into a ZIP archive for distribution. These ROMs require an emulator to be played on platforms other than the original Nintendo DS handheld console. For instance, a user might download a ZIP file containing the modified HeartGold ROM and use the DeSmuME emulator on a PC to experience the enhanced gameplay.
Modified Pokmon ROMs, such as this example, often offer enhanced difficulty, altered storylines, expanded Pokmon availability, and quality-of-life improvements compared to the original game. The distribution of such files, however, frequently raises legal and ethical considerations regarding copyright infringement, as the original game is intellectual property. While some users are attracted to the enhanced features and challenges presented, it’s essential to recognize the potential legal ramifications associated with obtaining and using such ROMs.