Originally Posted by
Tanooki
Too hard to really say. Each game, each board some games use, they'll be 100% or not. But in general it's very close if not dead on the nose. For years it has been a pain in the ass to configure and those nits for whatever reason for years would seemingly rename entire ROM sets for a game or many/most games on a version which was maddening. Back when they did it and I'm talking over 10 years ago I quit touching it as it became a job. I know it's a far different beast now and far better run, better supported, and more uniform as Fiery said, there's entire modern cabs sold today that definitely use it. They thing is they'll use a very pre-configured menu system so you may not even realize it's MAME, because stock MAME isn't pretty or fun to screw around with. Key I would think is getting the right ROM set for a game you want, then finding one of those fluffy pretty front ends for it so you don't have to do basically anything but turn it on and hit a key/button to pop in a quarter and go.