Hey there, I managed to build a 1G1R collection for most of the systems. Some systems dont have P/C dat lists at dat-o-matic, but most of them don't have much roms at all so I can sort them by hand when I find the time. I just don't want to see the same game multiple times when I browse my games in the frontend. Now I downloaded a romset for mame (v 0.151 because this is the latest version that works with RetroArch) and I wonder if there is anything like the no intro p/c dats for MAME roms too so I can sort out all the roms that are just different versions of the same game?
Bonus Question (Don't want to open a new thread for this): The romset doesn't contain chd files. I understand these are hard drive files which can take several amounts of disc space. Are they really needed? If yes, are there sets for chd files too? Same with samples. Are they absolutely needed?