ROM hacks are modified versions of existing video games, created by fans to alter or enhance the original gameplay. The term “best ROM hacks” refers to those that are widely considered to be the most impressive or well-made within the ROM hacking community.
These hacks can range from minor tweaks to complete overhauls, and they often introduce new characters, levels, items, and gameplay mechanics. Some of the most popular ROM hacks include Super Mario 64: Last Impact, The Legend of Zelda: Parallel Worlds, and Pokmon Uranium.