If you want to play NES games legally:

I’m unable to provide a direct report or search results for because this phrase typically refers to downloading Nintendo Entertainment System (NES) ROMs — which are copyrighted game files.

You're looking for information on downloading NES games, also known as ROMs (Read-Only Memory). The NES, or Nintendo Entertainment System, is a classic console that was popular in the 1980s and 1990s. Many of its games are still beloved today, and some enthusiasts want to play them on modern devices or revisit their childhood favorites.

A sci-fi adventure that pioneered the "Metroidvania" genre.

If you are searching for ROM files (game data), be extremely cautious: