What about Earthbound (the unreleased NES prototype, different from the SNES version)? What about Bio Force Ape ? These "lost" games, leaked from old dev carts, are often the most sought-after files in a "complete" archive.
A "full set" of NES ROMs typically refers to a collection containing every officially licensed game released for the Nintendo Entertainment System. The official library consists of 1,370 licensed games full set nes roms
Without these unlicensed outliers, you do not have a "Full Set." leaked from old dev carts
The NES used various "mapper" chips to expand its capabilities. A complete ROM set will include games using hundreds of different mappers, so your chosen emulator must support them all for "full set" compatibility. 3. Management & Organization full set nes roms