After a research I found out Lakka (which it seems it's based on Retroarch), but it's a OS. Has anybody tried it or can tell me how it works?
I'm low on bandwidth so the download is 400mb. Does it work like a linux distro (example: it creates a partition then i can just boot it) ? Can it be installed from USB ?
about Coinop etc, it looks promising... but sincerely I don't want to have anything with those who use the image of the Buddha holding a mini arcade cabinet (as I've seen on some download pages of that emulator).