Hi, I am new here and have a query, I downloaded the Rom pack of NES games (trying to set up a retro pie) once I extracted the file I noticed there was numerous games that had more than one ROM, for example there are 9 copies of "baltron" each with different names "baltron [b1], baltron [b2]" and so on.
I was just wondering is there any differences in these, why do I have so many copies and whats the best ones to use.
Sorry for the ignorance and thanks in advance