Right, don't direct me at a specific topic or something, just a reddit where I can be lost for hours and forget what the question even was.

Well, I at least know these aren't just Rasperry Pi's running MAME now, but I'm curious as to the quality of the emulation.

I'm also curious about two other things: One is the screen--what kind of screen it is (I assume it has to be a flatscreen of some variety).

The other is modability. Like basically would it be possible to use this thing as a Supergun (basically take out the built-in game's boards and hook up some other arcade PCBs?) This question though seems like a definite "yes and there's probably somebody who has already done it."