The phrase refers to the procurement of a digital copy, specifically a ROM (Read-Only Memory) file, of the Nintendo DS game Pokmon HeartGold. This file is intended for use with an emulator, software that allows a device, typically a computer or smartphone, to mimic the functionality of the original Nintendo DS console. Obtaining such a file often involves downloading it from the internet.
The availability of these digital copies provides access to the game for individuals who may not possess the original physical cartridge or a functioning Nintendo DS. This accessibility can be particularly beneficial for preservation efforts, allowing the game to be experienced and studied even as the original hardware becomes obsolete. However, it is important to note that acquiring and using such files from unofficial sources may infringe upon copyright laws, depending on the jurisdiction and the circumstances surrounding the acquisition.