You're looking for information on downloading a NES ROM, specifically "99999 in 1 NES ROM download top". Here's some context and guidance:

Some versions might start you with "Moon Gravity" for higher jumps or a specific weapon like the Spread Gun in Sprite Swaps:

It's essential to discuss the legality and ethics surrounding ROMs. While downloading ROMs may seem like a gray area, it's crucial to consider the following:

The "99,999" games are actually a loop of about 10–50 actual games. For example, entry #1 might be Super Mario Bros. level 1-1, while #500 is Super Mario Bros. starting at level 3-1. Top Classic Games Usually Included

In the ROM downloading world, "99999 in 1" has become a keyword for —massive ZIP or 7Z archives containing nearly every NES ROM ever dumped, combined with homebrew, bootlegs, and duplicates.

This 100-game list will give you more joy than 99,000 shovelware hacks.